@KH, as stated by spamray, those are the differences between the shine series and the premier.
@Geoph a collection? Well, most people here have a few keyboards. I personally cannot justify spending that amount of cash when I won't be using the items often.If you have the funds, why not?? As for the keycaps, take a look around the forum.There are vendors and artisan caps etc. I got my links from there. For Ducky keyboards, it uses the OEM cherry profile, which is something to take note of only if you're changing a few key caps.If you're changing the whole set, then it shouldn't really matter so long as the cap sizes for the modifiers are the same.Also take note if your board layout is ANSI or ISO. Off the top my head, I know that the enter and capslock keys are different between the 2 layouts.
I've recently ordered a keycap set from Max keyboards and the shipping to Singapore seems reasonable.
As for changing cables I've read somewhere that not all cables are compatible with the Ducky keyboards due to a different wiring or some sort. So be sure to take not of that.
I also recently ordered a cloud keycap from Signature Plastics that is going to replace my escape button. I think it's gonna look good with a blue backlight