Power vent hot water heater recommendations?

[Pelorus]

I want to replace my current gas hot water tank with a power vent unit (about 50 gallon capacity). Years ago we installed a high efficiency furnace-- power vented out the side of the house instead of up the chimney. We experienced the follow-on, much written about, problem of just having the hot water heater venting up the chimney. We had to replace the top 8 feet or so of our chimney-- interior damage due to condensation. I am interested in any recommendations-- best brand or brands to avoid. I have seen some comments/reviews that suggest Bradford White has a good reputation with contractors, Rheem Ruud being okay and AO Smith graded "below average." Any recommendations would be appreciated.

[RBM]

Depending upon the volume of domestic hot water you need, I'd consider an electric before a power vent

[Steve Barker]

I ended up with a State brand water heater. But had i been doing it for the reason you are, i'd just put a liner in the chimney unless the chimney is being used for other things.

[bob haller]

power vents require power line voltage to operate. having lived thru a multi day power outage years ago a old dummy tank will operate with no power.

something you should be aware of before buying

[ransley]

For tanks my AO commercial units last, look at the Vertex. Nobody rates them low.