Beatable games and System?
If you want the playing conditions of all Casinos, the monthly newsletter CBJN, available on this site, has the most recent playing conditions for all the casinos.
Most games including single, double and 6-8 deck shoes with proper rules are beatable with patience and a perfected count system. Whatever system you use make sure you can keep an accurate true count and can play relatively error free. Pick a system and master it. The higher level count systems are more powerful, but also much more difficult to master.
The Golden Nugget, Four Queens and Las Vegas Club all still have the real Single Deck games available. All single deck games are closely watched and large spreads and obvious counting will also get you quick heat. Most casinos have double deck games available, but the penetration and limits vary greatly.
What limits do you plan to play? What is you bankroll? What system are you currently using?