First of all, welcome to Geekhack!
The boards that you picked are definitely good boards but it depends on what your personal preferences are because one has a normal keyboard layout but without the numpad and the other has a totally different layout to begin with. I've never personally tried the HHKB Pro but I do have the HHKB L-2 that has a very similar layout. For some reason, I get tired typing on my HHKB L-2 that's why I'm back to using my brown cherry board. Comparing the switches, the blue switches are more tactile and has a higher pitch clicky sound than the brown switches. I personally like the blue cherries the best.
If you want to try out some keyboards, sorry I'm not in Boston, you can always get a used one on eBay for cheap, $10-$20, to try out and see how you like it. You should be able to get a Compaq MX11800 (cherry brown) on eBay for around that price. As for cherry blue, there is a board called the Scorpius M10 but the build quality on that is not as well as the Filco. Then of course, it is only $50-$60 comparing to $115.
I hope this helps!