[BumblingBuilder]

On King TeC we like to stick to Blue Nitrile tread on our wheels, in which we usually try to stick with 4" performance wheels that we mount them on.

They are much more durable than any other tread, as well as your Versawheel tire. While I have not used the versawheel tires personally, I do not really like the wheels themselves (we riveted blue nitrile instead of buying the tire tread when we tested them). We hated having to put the wheels together, just to have, at the end of everything, the hubs somehow out of alignment just enough for VexPro's hex shaft to not fit easily (which is one thing we value in wheels: being able to remove them in a pinch). We ended up fidgeting with 6 wheels for a long time just to get it to fit well. We wasted a lot of time on these wheels, and we didn't even use them on our robot. I was against buying them from the get-go, but that was against the desires of the leadership.
I really want the time I wasted that day back.

Colsons are just too heavy for my liking and don't grip into the carpet. Blue nitrile doesn't wear quick enough to make me irritated with having to frequently retread, so it is naturally my choice when pinned up against colsons. However, you can carve patterns into the rubber to grip the carpet more, but I would just rather not deal with doing that when I can have a lighter blue nitrile treaded performance wheel.

I guess it all comes down to circumstance, preferance, and what you are willing to do. If you need more weight on bottom to balance out the center of mass, colsons won't hurt. If the cleat-like attribute of versawheels are particularly alluring and you don't mind having to assemble the wheels and replace tread frequently, go for it. If you enjoy the smell of blue nitrile (yes it smells really good), satisfy your nose.

On a side note, has any team tested pebble top tread yet? We want to order it on King TeC and test it one afternoon, but if a team has tested it and found it undesirable, well save our $32.