Rolandlover,
The EXR7s is the best key feel by far. The GW-7 has very tiny keys, like an accordian. Also, the EXR3s and 5s don't have the goodies that the 7s does, so for the extra money, I'd go with the 7s.
zuki
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Live: Korg PA4X/Zed 6FX/EV Everse 8s/Senn 935/K&M stand

Studio: Korg PA4X/Yamaha DGX670/Yamaha PSR SX900/Boss BR900CD/Tascam DP24SD/MTM Iloud/Senn 935/K&M stand/Shure SM57/Sony C80 (2)/Blue Encore 300