Changing my mind on water heater

[Ludington]

I was set on buying a marathon heater for roughly 1500. Then started reading some bad reviews about the connections leaking and how the connectors are only being held by a thin piece of copper.
Since my water likes to eat copper, I don't think so.
This sent me back to our esteemed pros recommending to just get the low end units for 5-600 .
I believe this is now my route... but which brand ? Ream, ao Smith?
Do yall have a preference? And warranty level ? 6 year, 10, 12 ?
Thanks

 

[sarg]

My last two have been Rheem and I've been pondering just buying another to have it on hand.

 

[Ludington]

I wish maytag still made them.