Had my Bradford White installed last week. Thanks for the advice on which heater to buy.
The plumber left it leaking (a very slow drip where the copper pipe screws onto the dielectric nipples), so I had to cut the pipe and repair it. Typical.
But it's working a treat now. I wish DIYers could buy these, then I would have taken my time and got the install just right the first time. Nevermind. Next time I'll get the plumber to leave it at the door.