4run4me:
well first off you can't go wrong by picking either one
since you're getting a 4x4 here are some ideas to throw out.
If you plan to offroad alot and want to lift it and add some beefy m/t tires then you should look into the sr5. the suspension on the limited (w/ the xreas) and the rear air will be a pain to modify compared to the simple design of the sr5. I had the same delimma as you and I finally decided on the sr5 because I knew I was going to mod it.
the non xreas / rear high will help me use that $$ for a real lift and some real 16" m/t tires !!!
But, if you're gonna just use it for the snow and very limited offroad, then just get the limited as it is a great vehicle to drive.
gl and hope that helps any..