What is this new Rheem- the one that take heat from the air? I live in northern Wyoming where:
1. Our electricity rates are sky high- co-op is almost double than the city.
2. I use the tub 1-2 times a day to soak for 1/2 to 1 hour due to a severly injured neck/back.
3. Well water- extremely alkaline.

The currnet wh is 8-9 yrs old. I always tried to flush it, but when it was about 4-5 years old there is so much scale in it (up to the lower element that it won't flush out anymore).

Would this new Rheem be worth it?
I think it comes in a 50 gal, which I would like.

Would there be a better one?

Would a 3/4" quarter turn ball valve help me flush it out easier?