I was in 1A on my last E175 flight, and I found the legroom suboptimal. It's okay, but there was no possibility of straightening my legs (I'm 6'1", FWIW). It's not like 1A on the CR7 or (iirc) the E170.

In the future, I'll probably take 2A. I've had two equipment swaps so far (one from a 170 to a 175, one the other way), and I figure that in case of a downgauge, Rows 3-4 get downgraded.