I totally trust the Rushmore Group and Lucky Club Casino which are RTG casinos.  They BOTH have speedy payouts.  I also play at Casino Titan, Slots Jungle and Winpalace.   They also pay as promised but take about 5 days for a payout.  They are also RTG casinos.

As for Rival casinos VRC has the VERY best non stop no deposit bonuses on the net.  If you looking for a casino where you feel appreciated for your deposits...this is the place to play.  As for the FASTEST payouts I have received at a Rival casino that would be the Box 24, Spartan Slots and Black Diamond group.  Payouts are ALWAYS within 2 days and most of the time much quicker. 

Right now I am on a Rival kick and prefer to play their right now.  What's important to me is fast payouts with decent deposit bonuses and low playthrogh.  I think that is what everyone looks for...right?

As for microgaming I don't play there anymore once they switched to the non US thing a few months back.  I can't seem to win a thing but was playing at Villento and Rich Reels.

I also like the Betonsoft Casinos and they are Mandarin Palace, Lucky Creek, Grand Eagle, Wizbet and Treasure Mile.  I deposit via quicktender/use my wallet and always have my payouts in 2 days also.

A good thing to look for depending on what kind of software you like is to check out the Casino Reps link on the left.  See which reps are active here on the boards.  That is always a good sign.  It assures you that if you have a problem you can reach someone almost instantly.

I hope this helps.  Good luck no matter where you decide to play and welcome to LCB!