If you search tire threads, you will see that there are a lot of different brands of tires that folks are very happy with, so you will have to read the reviews, get some quotes and decide on what to buy.
Last year, I replaced the original tires on our MH with Toyo M154 tires based upon the positive reviews I've read online and the recommendation of the owner of a trucking company that I know. I found the Toyo tires to be a "best buy" in terms of cost, and so far, they have been great.