Don-I haven't shot an E-500, but I just traded for an '07 Synergy not too long ago. I have to say I am quite impressed. The draw on the Synergy is much like you described, very smooth with no "hump" to get over. Mine is maxed at 61#'s and set at 29". It spits out a 386 gr. arrow at 284 fps. You should definitely check out the Elite forum, lot's of good info and good people there.

Congrats. on a GREAT deal!