Just wondering on others' thoughts.

Does anyone in the US have a tankless water system? How do you like
it? Was it extremely expensive to install?

I've lived with them in the UK and love them, but they're not so common
in the US yet. We had decided we'd install one during renovation, but
the current water heater is the *one* thing in the entire house that's
reasonably new and in very good condition. Seems a shame to replace it
while it's working so well. However, we are still re-doing all the
plumbing, so it would make sense, one would think to install the new
system now.

Would costs be prohibitive to wait to install? As we're redoing the
entire house on limited funds, we have to pick and choose where we
spend the extra cash now.