To be honest, when you put the Hot Toys Optimus against some of their other figures, it is possibly the worst figure they've produced. I've seen the Megs and the Starscream versions IRL and I have to say if I was spending that kind of money I'd rather put it into something from Prime1 and I'm normally an absolute sucker for anything that is G1 Prime-esque. I love, love, love Hot Toys other lines - their attention to detail is normally second to none, but this guy is mediocre at best when you know what this company really is capable of.
I also have to say the idea of a G1 Prime going around offing Decepticons to add their technological distinctiveness to himself doesn't keep with the ethos of who I think Optimus is (by G1 standards at least).
I would probably buy it at 1/3 the HK list price if it came without the "bits"...