I own GG too and GG does make playing games enjoyable (easy to press) like emu games, super tux, frogatto and friends etc. However, if you happen to use casing on your n900 like otterbox the problem is you gotta remove the case first. Otterbox case is really tight and not so easy to remove.

I'd prefer something like this http://dailymobile.se/2010/11/04/and...ontroller-mod/

Full touch screen with no keyboard also can use it too. It's quite elegant solution