My .02
Here's my .02-Had sleds without studs, had a few sleds with studs.
Bought my Apex last year and didn't stud it as I found it a hassle when putting it in the garage and having to be careful not to scratch up the concrete.
Well, since I haven't been able to do any trail riding this year due to our snow conditions and having a lake and river system to ride, I learned a lesson-PUT STUDS IN THE TRACK!!!
I had my nephew out on another sled and went for a ride on the river, taking it easy as the corners were cleared of most of the snow.
Well, wouldn't you know even at 20-25 mph around a gradual curve, the kid's sled started to come around and rolled over once, breaking off the mirrors and cracked the windshield. Luckily no injuries to him, or any seious damage to the sled.
After last year and no studs in the Apex, I thought I would be satisfied with no studs, but that was 100% trail riding. After this past weekend, I'll be ordering the proper traction products needed for SAFETY-I don't care if it robs 5 or 10 mph out of the top speed of either sled.