R.G. : Hi, I'm R.G., sorry you're having trouble today. I will do my best to assist you in resolving your issue.
R.G. : Rheem is a good product IMO , I wouldn't recommend any other over it.
R.G. : The 2 you listed have basically the same performance
R.G. : Approx. 40 gph recovery at 90' rise
R.G. : 90 gph first hour
R.G. : 272 average annual cost depending upon gas prices of course
R.G. : The PDV- 50 does have a slightly better warranty 6 year limited parts and 8 year on tank other only has 6 year. This is due to construction of tank.
R.G. : Either would be a good choice, I would get price on both and make decision between the two based on price and warranty.
R.G. : Also it is always good to get prices from 2 or 3 different contractors
R.G. : Lowest price isn't always the best, XXXXX XXXXX all contractors bidding or reputable and bidding the same quality product and warranty
R.G. : Did this answer your question are do you need further information? Thanks