You won't find what you are looking for off of the strip. $10-$20 can be found at Mirage. Bellagio, Wynn and Venetian offer $8-$16 (the venetian game is hit or miss). Higher limit games are pretty much just at the Bellagio (Wynn may occasionally have them but Bellagio is your only sure bet) No Limit poker has killed Mid Limit in Vegas.

Nothing closer to Lake Las Vegas will have anything higher than $4-$8 Limit and small buy in No Limit games.

Tournament wise check out this site.

http://www.allvegaspoker.com/tournaments.php