I have recently installed a rinnai tankless water heater. I like the fact that I never run out of hot water, but I don't think that the heater lives up to its stated 7.5 GPM. When the washer draws hot water I get almost nothing in the shower. It's only been a few months so It is still too early to tell if I'm glad I went this route. The one thing I do like is the space savings which was important to me.

PeachTree 65se, PeachTree D5 and SVS SB1000 - Stereo
M80s, M22s, SVS PB3000