I have used the Gary 'leak master' high backed pants with cloth diapers for several years and have had very few leaks with this combination.
I have a 36inch waist and I find I can wear the medium through the X-large depending on how much diapering I need. You might check out the Diaper Primer on this site for hints on fitting plasitc pants and cloth diapers.
Generally during the day the med size fits well over a light cloth diaper and at night the X-large works well over a double night diaper. I have tried both the 'deluxe' heavy plastic and the lighter plastic. I have noticed the lighter plastic pant is more comfortable but tends to split at the waist side seam. At this point I generally use the 'deluxe' during the day and the light pant at night.
The bloomers seemed a little extreme so I have not tried them. I have ordered Gary Pants from both
www.adultclothdiaper.com and
www.changingtimesdiaperco.com .....each has good service.
Good luck finding something that works for you. We are all a little different.