Logitech G15-4k OR Microsoft Sidewinder X6-4.4k are good options,Logitech G110 is solid but do check these two out.I'd say go for G15 OR X6 instead of G110 they're very good,Other members with personal experience will comment.The only drawback of X6 is it only has 1 year warranty so do consider that.
Isnt G15 quite old now ?
The latest G15 is the revised model of an old G15 so no need to worry,As they say Old is Gold.Here's a review you can have some idea about it-Logitech G15 (New Updated) Keyboard - Overclockers Club
The article is dated december 2007 ?
Why are you worried about the launch date,You're gonna get a new one.If you want you check it out then go to some store and check personally.It has 3 year warranty as many logitech products.