I just got my Hound & promptly opened and transformed him. I'm not as impressed as I'd want to be for the price.

Summary:

Pros:
- The robot mode mostly looks great & there's cartoon accuracy
- The vehicle mode attachments can all integrate in robot mode
- The robot mode rocket launcher integrated into the vehicle mode, and the way it forms part of the interior of the Jeep is very clever
- Excellent poseability & well thought out accessories

Cons:
- I know they're going for cartoon accuracy but I'd have preferred the colours be a little more realistic and a little less cartoony. It does come at a cost in vehicle mode
- The neck joint already mentioned by others, though in truth this doesn't particularly bother me
- I dislike the false wheels on his ankles. They look silly & I would much have preferred the real wheels
- It's too fiddly in some areas; which means that some joints are delicate with fine clearances - I'd rather have had a little kibble somewhere rather than the door hinges that, as some have found, are fragile
- Related to the last point, I don't want to transform him back to vehicle mode... I'm too afraid of these joints breaking. If he wasn't $200+ I'd buy another to display both modes. But then, the vehicle mode's green is too light to really evoke a military Jeep (the BT did that much better)

I'm not dissatisfied; Hound will look GREAT alongside the other Autobot cars. But the earlier guys like Bluestreak & Sideswipe are far more elegant and sturdy for mine; and even NOW on eBay are cheaper than Hound. While the MPs aren't really designed with play in mind, this is far less playable than the earlier cars.