Hi Rhubarbpi. Welcome to Geekhack.
Very cool. I was a web assistant for a year or so for an adhesives company, years ago. That was a really boring job, mostly product photography, editing of those pictures, and data entry into a CMS, but at least I got to play with the HTML from time to time when my boss couldn't get something to look the way he wanted with his Dreamweaver training wheels.
I hear good things about Ducky and Filco. Never owned any of their boards. How do you like the Unicomp? I hear good things about their latest iteration of the Model M. I think I actually like MX blues more than membrane buckling spring myself, and I'm no longer a big fan of MX blues either. I would recommend some fantastic clickies to look at, but I imagine Chyros' videos (who is an active member on here, actually) has probably already steered you towards box thick clicks, capacitive buckling spring, Alps, etc, and maybe Matias. I'm typing this from a Matias Mini "tactile" pro, but I was using an Alps SKCM white Nan Tan from the 1980s just yesterday.
I'm sorry about the delayed welcome, I haven't gone through these in a while now.
Unicomp makes a fantastic iteration of the Model M - they have a brand new version called the "New Model M" that supposedly has some chassis upgrades. While the weighting on the Model M is quite heavy, the tactile response is crisp and kind of "lifts you up" as you type. I switch between the Unicomp and Matias every other day. I type faster on the Matias, and by far these Matias Clicks (and I suppose Alps style switches in general) are my absolute favorites sound wise. That being said, I'm seeing some strange build quality issues with the Matias that I'm currently testing ie 0 on the numpad is sticking, alphas sometime feel sticky / sound scratchy.
The Ducky and Filco's are built extremely well. However, the MK Typist with Kailh Box Whites, to me, sounds and feels superior to the MX Blues present in the rest of my boards. I have reached that point in my mechanical keyboard evolution that MX Blues no longer cut it for me. So the possibility of getting another Ducky & Filco is probably fairly low.
I'm currently searching for a *super clean* NMB board with clicky Space Invaders & a Fujitsu Leaf Spring board. Of course I'm looking for a clean Apple Extended Keyboard (with Alps Oranges), but my god is it tough to find one without it being snatched up 
That is the version I meant by their latest iteration. I don't own anything Unicomp, but I may change that once the Mini M comes out. Oh, I know buckling spring pretty well. I own 4 or 5 1980s Model Ms and various Models F are in my daily rotations. Yes, Matias clikies sound absolutely wonderful. I may even agree on them sounding the best of them all, though I do quite enjoy sing-songy high-pitched clickies too, because I'm strange. Sticking as far as staying down, or registering more than once with a single press? (chatter) Key chatter is a long-existing potential problem with Matias switches, unfortunately. I haven't encountered it yet on any of my Matias boards, but I imagine I'll be able to fix it if/when I do. Alphas as in alphanumeric keys in particular? I can't say I have experienced that. Has the board gotten really dirty? The Alps design is very, very susceptible to dust and dirt. I try to keep my Alps and Matias boards covered with a towel when not packed up or in use, and try to keep them from unnecessary buildup of debris. I'm not sure really how similar Matias is to the old genuine Alps switches in this regard though.
If you have the clicky switches, I imagine you've either got a Mac version of one of their boards, or you've modified a PC variant. If you're stuck with a Mac Mini board and don't routinely use the operating system for which it was meant, you may be happy to hear that I recently discovered that
the controller can be quickly modified to the PC layout with a few 100 ohm resistors.
Yeah, I consider MX blues to kind of be the Honda Civic of keyboard switches. It isn't fancy, it isn't pretty, it isn't luxury. It just gets the job done without any problems. For me, it just barely qualifies as something usable these days, although not without regret. Box whites sound and feel great, although they're a bit light, and I would prefer a bit bigger tactile bump.
I want one of those black clicky space invaders boards myself. I have seen plenty of them but kept passing them up. I have passed up plenty of relatively cheap AEKs as well, unfortunately. Keep looking, you'll find both. I have seen Fujitsu leaf spring boards as well, although not nearly as commonly.
Box navies are wonderful. They're higher pitched than the box jades and pinks, but there's something magical about their spring and tactile event balance. If you're used to a Model M, I imagine the weighting will be just fine for you too. They do sound wonderful in their own way, you can almost hear the crispness of the click.
