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/Bose L1 Pro 8/Senn 935
Studio: Korg PA4X/Kawai MP7SE/Tascam DP24SD/Sony C80/AGK 214/ATEM Mini Pro switcher/