If Titan 20NL is hard to beat you should move
I donīt know Titan but i find that Cake and Tilt are pretty fishy at 20+25 and 50NL/PL FR
Cake, Tilt or Stars - you could move for sign-up bonusses alone, even if i found it pretty hard to clear, as im not a massive multitabler (8 tbl max FR)
On Tilt and Stars you could go for deeptables/PL if you want to avoid shortstackers, but youīd run in to a ton of nitty (15/10- 17/13) and weaktight players there (pfr <10 limps non-primers)
I rarely find any tags on Cake or Full Tilt but that might just be a defenition issue
(18/15 is not LAG id say a tag at FR would have a pfr 14+)
I myself am turning to become a mindless robot-nit (15/10) only picking on the worst players - still doing fine, so im not picking on nits.
Id say that Party, Prima, MartinsPoker, Cryptologic, ParadisPoker are (or was when i played there) are also full of pretty bad players.
Ehh I donīt remember a site iīve played on were 20NL was hard to beat