I'm used to playing downtown Vegas SD & DD rules - H17, DOA, no DAS, no RSA, for me the usual. I'm a red chipper, so I can't zoom up the strip to TI or wherever for better rules on the $25 or $50 DD game. Most downtown DD games offer 60-65% pen, with some exceptions. I always felt it was conservative, but I dealt with it.
Here's my deal - I took a couple day trips to a Louisiana casino that offers DD with excellent rules: S17, DOA, DAS, RSA, but no surrender. They also don't offer surrender on their shoe games. The DD are $10 min, but the shoes are $5 min.
FYI I use K-O Preferred with only a few indices.
At this Louisiana casino, the DD game AT BEST is dealt with 50% pen. I saw some relief dealers that cut off the playable cards at 40%. The DD tables are nearly always crowded, and three rounds to 6 or 7 places is normal.
As a possible alternative, the shoes cut off around 2 decks.
I played during two trips, mostly at the DD tables. Due to the limited availability of DD tables, I was stuck once there, or I would lose my spot. However, one trip I did take time to hit the shoes, and never once hit the key count over two shoes.
I guess my question is this: at what point does the bad penetration overcome the advantage of better rules? I won a small bit of money on both trips, but it seemed like everytime the count went plus on the DD game the yellow cut card came out. I loved doubling after splits - I made a bunch that way. I wish I could get that option in downtown Vegas.