Dude, get ready for the ride if you're gonna take the plunge! These figs are so cool you'll get hooked. I held off for a long time, but once I got a couple, it became an all consuming, all encompassing hunt for the past figs I wanted.
Clayface is awesome. I've got one coming from the DC Superheroes line (same sculpt). I can't wait for it to arrive. It looks so cool, I'm excited to get it out of the packaging and actually check it out.
As for the Batman in the pack, I wasn't really a fan of the the clay stains on him, nor am I a big fan of the yellow symbol (I prefer the classic black vs. black and yellow). However, the sculpt is awesome. They are releasing pretty much the same sculpt without the clay stains in wave 11 I believe, and a superman without red eyes, if those things matter to you (the single releases of the Walmart Gotham 5-pack Superman and Batman). If not, go for the 2-packs.
A warning about getting into DCUC: I'm not sure what it's like in your neck of the woods, but they're difficult to find in Ontario. No brick-and-mortar stores really carry them, so it's comic shops. I've also had to get the older popular figs off evil-bay. I would have to say though, without a doubt, however, that they are worth every penny of shipping!
The sculpts are absolutely fantastic. I bought Hawkman the other day, and I wasn't ever planning on getting him. I'm geeking out over the sculpt! It's so cool dude. So many of them. Ahhhhhhhhh!
Dude, they're awesome.