water filter recommendation?

[cam00]

Certainly, even according to the "expert", R/O systems do waste water.

As for purity, I can guarantee that a MULTI PURE activated carbon filter, MUCH easier to install and maintain, is a SUPERIOR filter to any aspect of a typical R/O system, and will provide absolutely "sparkling-clear-clean-DELICIOUS water". A R/O system strips the water of EVERYTHING, including the minerals that give normal water it's flavor. The MULTI PURE will not take out heavy metal contamination.

BUT, if you're concerned about heavy metal contamination, and GTO is very suspect, then it would make sense to go the R/O route.
Still, many people do NOT like the flat, tasteless water that a R/O system produces. In the US, there were no plumbers that would install a R/O system due to it's complexity (for them). So, a specialist would have to be hired to install a system, typically about an hours' worth of work to do it correctly. If you feel pretty confident with your mechanical and plumbing capabilities and can follow installation directions well, then you might be able to install it yourself. If you intend to have a spigot installed at the edge of a porcelain sink, you will need a special type of drill bit, available from HOME DEPOT or a similar type store.