blue switches

Hi, I am interested in buying the gk61 in gateron optical blue switches and was wondering is there a difference to regular gateron blues in terms of the feeling? I know the optical blues are faster but is there a difference in the feel?

I want to buy Redragon Kumara K552 keyboard, but I don't want it to have ABS keycaps or at least not one that feel sandy on surface, so if anyone can help me if there is a version that doesn't have sandy surface on keycaps.

I'm looking for a 2nd hand server to be used as a NAS for backups and for a media server. I've just bought an HP Proliant G6 DL380 and would be quite happy to buy something else from HP if it can suit my needs. The requirements are: Preferably 3.5" Caddies. Drives must have SATA interface. Not...