Small Stakes No-Limit Hold'em

1/2.. player in mp raises to 6.. next player in mp calls.

We each have 200 stacks.. so if i call pot will be 21 bucks divided by 200 is 10.

So should i call with only small pairs?  if i have no steal equity which i prob dont since the middle position raise usually means pretty strong hands.

Since i should have an spr of 20 when i dont have steal equity with sc's,, no gap down to two gappers.. i should fold them here unless we had stacks of $400 bucks.

Or should i call with pairs and sc's since i can call $6 bucks to possibly win $400 if they both get all in .

Can anybody please give some expert advice on this issue which i feel was never clearly explained in the books.  

In Sklansky's nl book he says that after  a raise and a call play as if there was no raise which means calling a bunch of speculative hands in cutoff and button. What about calling right behind the cutoff with speculative hands?  I've heard to only call speculative hands with the right spr/ implied odds only in the cutoff and button cuz calling in the 3rd seat back is too risky due to having 4 players behind me. 

Sk