After using DeathAdders (v1 for 2,5 year and v2 BE for 1 year) I changed to DiamondBack 3G, aaaand I can say this is the best mouse I have ever used. For me its better than DeathAdders.

I also tested Logitech mx 310, mx400, MouseMan DualOptical, mx518, G3 and G5; Microsoft Habu and IntellimouseExplorer 3.0; Steelseries Kinzu v2; a4tech Swop 80 and x710-bk; Razer Lachesis v1 and Deathadders.
Also mousepads which have been on my test were Func F10s-14, F30r; Qpad LowSense, Xt-r, CT; SteelSeries Qck+, Qck Orange Heat edition; Roccat Taito king size; Razer eXactMat and 3 generations of Goliathus, which I like the most and using the oldest one (its about 4years old so you can imagine how it looks like after many many hours of playing, using on parties, dropped glue onto and outwear to zero size with 4 garnitures of mousefeets ), but still it is the best for me.

As I find the "getting used the use of" takes 80% of a decision to change to other mouse or not, for me its sure...