I too am considering a lift for added ground clearance. I don't drive fast (max ~40MPH) and like to creep through roots, rocks, and mud. One system I am waiting on would be a portal lift. There are many companies that currently produce these for UTV's (superatv, sxsgear, etc...). There are many pros and cons to a system like this and it would depend on how you intend to use your UTV.
Here are my thoughts on pros/cons (please feel free to add to this):
Pros:
1.) No binding on bearings or increased angles on axles
2.) 30% gear reduction for a lower crawl ratio
3.) 4" of increased ground clearance
4.) Added width for side hill stability and staying out of ruts
Cons:
1.) Added width (restricts for some trails)
2.) Could effect high speed trail riding (unsprung weight)
3.) Cost, these are not cheap (~$2,500 - $3,200)
In my opinion, if you want a lower gearing and don't do the fast trail riding and have some disposable income then the portal lift seems to be much better. However, if you just want a slight lift (1-2") and are fine with the gearing then something like a strongmade bracket lift should be fine. Although, a member on here tried the strong made lift with 30's and it didn't fit without modification to the plastic. So, you would need to stay in the 28-29" tire size range with this type of lift.
