If by speedplays you are regarding the frogs. The frogs are a bit on the sucky side with mtbing as well. If you get speedplays, make sure you get one of the pedals from the zero or x series, it will require getting roadshoes though, which they are stiffer, but during the wintermonths if you ride outside, you can put shoe covers on IE booties over the roadshoes and your feet will stay warm and dry. Plus walkability isn't as bad as some people make it to be. Cleat covers can be had when you are off the bike so the cleats won't wear as quickly.

I'm on speedplay zero track editions, before that it was speedplay frogs.