I have the '12 K2 Auto Uprises. They're basically Formulas with auto tech built in and harshmellow =D. Very durable. I haven't had any issues so I have no complaints on them. I especially like their high backs. I also have the 390 Bosses. Muchhh more flexible than the K2's. So if you're wanting to avoid flexibility, I wouldn't go with the Bosses. I'd only want the SL from Union personally. I also have the Maysis so good choice!
Last edited by tylerkat89; 08-29-2012 at 11:44 AM.