A Roland A33 controller has a good semi weighted key feel and would work find with the light, undersized Yamaha's..
Squeak the Studiologic controllers are Fatar..
You may want to check out the M-Audio semi weighted model controller[$299]...or M-Audio fully weighted model [$599]..The latter is a super 4 zone controller, but around 50 pounds..
Squeak the XP60 has a decent feel, but no where as good as the G1000,VA76 and G70..you only have to play the Roland boards for a minute to know what I am talking about...When my G1000 is no longer used as an arranger and sound source...it will be a designated six zone controller[41 pounds]..As a midi controller it is hard to beat..