Thanks for the quick response.
To add more detail behind my thinking, my interest in the Proto CT is based on 4 factors (assuming I've read the reviews right):
1. Similar to the SL in many ways (I'm probably oversimplifiying)
2. Light vs. the SL
3. Carbonium Topsheet
4. True Twin (I often land jumps switch)
I guess the one concern I would have with the Proto for me is stability on longer carves at higher speeds and in worse conditions.
As mentioned, I was lucky enough to demo the Evo 155, CT 155, SL 153 and SL 155
1. Eh... sort of? The CT is the exact same shape as the EVO, but with that topsheet has a snappier nose and tail for more pop... that snappier tips also make it feel a bit stiffer. The CT is similar to the SL in that you can easily take it freeriding.
2. YES ... even though the 2012 SL is way lighter than my 2008 SLR... the CT is noticeably lighter. The drawback/difference is that it is livelier/less damp as you will feel crusty snow under your foot more. As you are 50 lbs heavier than me... that might not be as much of problem (i.e. you don't get bounced around like I do).
3. I definitely like the feel of the topsheet, but may not be for everyone.
4. True twin doesn't matter if you are just doing 180s... it matters a tiny bit for higher rotations (540s, etc).
To be honest... a 157 CT sounds a little short if you are 200 lbs and want to freeride with it, but that's just my opinion. I think a 159(?) SL or a 160 CT might be good for you... VMan would probably know better.