Looking to replace the rear tires on my 85 ATC 250R. The tires I am looking at are the STI Tech 4XC (which I already have on a quad and think they are great), and the Tusk Voltage. Has anybody tried the Tusk Voltage tire or even been able to compare it to the STI? They are both 6 ply rated and cost the same. I would kind of like something different, but would like to have some feedback from people that have used both of these tires. Thanks for any responses.