I actually have a pair of 2011 32 summits that i bought on sale as part of my first set up. They got me on the hill but I think I want to try out a stiffer boot.
No wonder you want a stiffer boot. Those have a flex rating of about 3 which is just about as soft as you can get. The TM-two/Lashed have about 7 and a 6 rating respectively, so figure on effectively doubling the stiffness if went with the softer of the two. Maybe someone else can chime in here but IMO once you step above the 7 mark you start loosing that all mtn/freestyle genre and step into the all mtn/freeride area where the boots start to become less and less compatible with park riding.