For the most part the ordinary 3M stuff you noted is likely good enough. Then again if you're running an 1/8 buggy, with it's heavier platform, or do a lot of wrecking (no offense) then you might check into some heavier-duty stuff that holds a lot firmer as it's intended for more industrial uses.
But do not under any circumstances use it to hold down battery packs - it's not worth the risk. People have been trying to use sticky back velcro in RC uses since it came out back in the 80s, including the industrial grade heavy duty stuff, and all it's resulted in is people ruining their electronics or batteries or whatever when it gets ejected from the vehicles after a hard crash and costing them money.
Hold on bodies = good
Hold on anything else = bad