I found all of the Combaticons to be quite disappointing. None of them are exceptionally good - mediocre at best. People who found the previous FoC toys disappointing will be even more disappointed with these figures.
+ Swindle has the worst robot mode of the lot... looks terrible from behind. Like one of those cheap toys you'd find in a dodgy marketplace packaged entirely in Chinese and bad Engrish. Vehicle mode is okay.
+ Vortex really needed wrist articulation so that he could at least displace the rotors to the side of his arm (instead they're permanently pointing forward). His "skirt" hinders leg articulation. The vehicle mode is alright and the rotors spin really well. He comes with swords... even though his rotor blades are set up as a melee weapon. Could've really done with some guns. :/
+ Brawl's robot mode is alright, but hindered by massive back kibble. The vehicle mode is nice - my favourite of the group's... quite game-accurate.
+ Blast-Off has a nice robot mode except for the shoulders/arms which are prone to popping off, and the design hinders decent arm articulation.A real shame, because aside from that this figure had potential. Vehicle mode is nice and solid.
+ Onslaught has the most solid robot mode of the group (but still not exceptional compared to most other Deluxe Class Transformers). His vehicle mode is awful... it feels like it's incomplete. When I finished transforming him I thought I was only halfway through, then I checked the instructions and thought, "Oh my God... I'm done! That's it??" Anyone who dislikes G1 Kup's alt mode shouldn't look at this toy in vehicle mode. Avert your eyes!
I haven't merged this toy into Bruticus yet -- I'll do that later. I'd like to try to enjoy these toys as individual figures for a while first before I try that. I'd only recommend this set if you just want to complete the FoC Combaticons as a fan of the game/characters. As toys themselves, they're rather lacking. On the plus side they're currently available at Kmart for $23. I wouldn't advise paying $30 for them (and I'm mighty glad that I didn't).