As stated in a previous thread, if you are riding mainly on the tar, I would seriously suggest the Pirelli range of tyres. My suggestion would be SCORPION MT90/AT. Visit their web page and you can view their full range.
I think that if you are looking at the occasional dirt road, then buying anything with agressive tread is not a good idea. The Mefo explorer is one of them to keep away from. They are just plain dangerous in the wet and in my opinion not worth the efforts. They have serious problems with delamination tear (mine lasted one ride). The company gave me a full refund and you can read about them on line!
Midas are a great tyre for 50/50 EO7's (not the front - useless on the gravel). The rear lasts and lasts. You can expect to get 6-8000km if you are not an agressive rider.
As previously stated, look up Motoz, made for Aussie conditions which means good for almost any condition perhaps the ice and snow! The explorer range is surperb, but in my opinion the front is loose in the sand, but fantastic in the dirt, gravel and rocks.
My suggestion for anyone wanting a great off road (real off road), combination is:
Motoz Tractionator Adventure (Rear), if you can purchase them outside Oz.
TKC 80 front
Yes! you do get what you pay for, don't skimp when it comes to tyre choice.
"Men do not stop playing because they grow old, they grow old because they stop playing."
O. W. H.