You made the right choice, don't even look back. My wife and I both ride X-1's, but the X-2's are the best dollar value.
I see no reason to limit float except for people who have a serious long term problem with the rear of their shoes hitting the crank or chainstay. First time Speedplay users often have a temporary problem with their heel hitting brushing against the crank but this usually goes away after a couple of rides.
I've had adaptor plate screws loosen but blue Locktight fixed that.

Al