I play only single deck, spread $5-20. I now only play 1 hour in a casino per day to avoid recognition. Here's where I played:

Penetration Heat
Circus Circus: avg avg
Horseshoe: avg bad
Fitzgeralds: below avg avg
Slots of Fun: avg avg
Golden Nugget: avg avg

I had my best luck at Golden Nugget & Horseshoe.

El Cortez had (and still might have) very deep penetration at $2 tables. I got barred there, but it may still be a good place for novices to practice counting. I used to routinely see 2/3 of the deck and spread $2-20.