I tried the Atomics on the Seasoft attached boots and the fit was
lousy, which is why I had my Seasoft suit made with socks instead of boots.
I use both XL Atomic splits and Turtles, with size 12 DUI rock boots on
a Seasoft Ti3000 suit.
Also, I think the Atomics will give trouble with other brands of boots. I
wasn't able to actually try them, but the folks at Hoodsport 'n Dive were pretty sure
the size 12 whites boots wouldn't fit the XL Atomics. The DUI boots are
a bit lower profile than most, because they have a flat sole, while the whites
stick up quite a bit. But then again, my foot is slightly larger than yours,
an 11 may work OK. The Turtles are a breeze, I think they will fit pretty much
anything. I'm liking them right now just because they're so easy to get into and out
of (with huge foot pockets+addon springs) and because they are so tough, but they
are nowhere near as fast as the atomics. They are also just negative enough that I'm
comfortable with no ankle weights even as a relative newcomer to drysuits. My
atomics (the red ones) are actually positive (even in fw), and I really need a pound or
so on each foot with them right now, although I suspect that I'll be able to drop this
after a few more dives with them.