Wow, lots of feedback

My Olympic Steeltrek's look to be reletively new, with heaps of tread and no bulges or and signs that they are out of round. I have a Michelin xzl as an odd tread out on my 110.

How does the xzl compare to the himiler xtragrip and the steeltreks for off road?
I don't really care too much about on road manners for a 4wd.

When I get a new tube fitted for the punctured one I will find out if the are rims that require a tube to be installed and that should help narrow down my options.