I play at Argosy more than any other casino and I'm yet to have a losing session there. I've found that yes, wonging is VERY difficult there because the place is always busy, however the 2nd floor of the boat is usually less crowded and I 've gone down there to lower limits/less players since not as many people know the tables are down there.
It is also best to be there in the late hours of the night when the tables sit relatively empty.
Grand Victoria is horrid last time I went there. The tables that I played at, despite wonging, I couldn't seem to win. They did have a $25/2 deck game where I made a bit of money, but overall I think it's best to avoid that place.
down the road at Belterra there is a double deck/$10 min 3/4 deck penetration. the rules make it pain in the ass : No Mid Shoe, double 10/11 only, no DAS, split once. The rest were 8 decks or CSM.