we didn't have any luck with them and everyone else who had them didn't likem either. swamp lites are a great tire and holding up very well in rocky conditions. if you don't want to spend the bucks on them i would go after the bias mud lites for the price of them. they wear great and hook up well for the price.
I have the 27" Dirt Devils on a 01 sportsman 500 and they work well in deep south mud. Thats the regular ones and the tread is alot deeper.
I can't say on the II's. I like the ones I have. Have the GBC Gators in 28" on a 07 sportsman 800 and have had good service out of them too. I think the company has a good product for the price.