I did like my Geospring, but GE sold the entire division off to another company some years ago. Since then I can't speak to the units. My new one is a Rheem. I got it fairly inexpensively from Home Depot and have been happy with the performance of it thus far.

One word of warning for the Rheem units. They make two lines and they DO NOT call out this major difference between them.

• Professional Prestige - This line is sold through professional plumbing supply houses. These use slightly higher quality parts, and more importantly, include warranty on parts and labor and they can be repaired in place. There's no way around it, but these are more expensive to buy. When I got quoted me it was over $1200 more expensive to go with this line's model.
• Professional Platinum The other line is sold at retail to big box stores (like Home Depot). These include some cut corners and sometimes cheaper parts. While the warranty length is decent on these, they offer WHOLE UNIT REPLACEMENT ONLY. Meaning to get the warranty honored, you're required to disconnect the unit in your house, take it back to a retail store, get a replacement unit, and reinstall the replacement unit. I suppose if you're handy, have a truck and tools, this probably isn't a big deal. I personally don't have those things and if I ever need a warranty replacement I'll have to pay for all this labor and delivery out of pocket.

If you want full service and support options or go cheap for savings will be up to you.