I've got Bumblebee, Sideswipe, Jazz, and Barricade. Of these, I only dislike Sideswipe (if you want mine, PM me and you can have it for a song). Jazz is probably the best overall, but I really like Bumblebee, too. TFW2005 reports that some discount stores (like Ross) are still receiving shipments of HA Jazz.
Target (in Walnut Creek, CA) had a few yesterday at $34.99, not a bad price for a toy of this size.
Best, MyClone