Thank you all so much for responding. Really last night it just seemed to come to a point of utter frustration. I had read the links you posted, Enduring. Some really useful info almost too much ;) I had not heard of Luxart and liked the website the products seem very straightforward and I really liked the Perpetua line but they are only in three colors and no polished nickel. I was all ready to order hansgrohe Friday and took my husband to the showroom. The trim plates behind the lever valve handles are all plastic and the handshowers did not have enough heft to them. Compared to moen in the showroom And he said $850 for this ? No way. At this point I'm going with Delta as I found trim for them on ebay in Polished Nickel its been discontinued on their main lines. Husband is handy (Plumbs)and we will be able to get at all walls for valve repair if needed in the future. He did point out my tastes change at least as often as plumbing needs to be repaired so just get something reasonable now and if it lasts 10years great. I will hate it in ten years anyway and want to change out the trim and if I go with Delta its easy. I suppose this is weird thinking but it would be really nice to not pay $7 grand on faucets for this house.

There seems to be some issue as to whether wolverine faucets have the requisite certifications for installation in the US at this time.

Thanks Sophie. I searched for ceramic disc valves on various plumbing websites, and filtered on the Home Depot site. None of those three brands had any hits. I also looked at some faucets on the brand websites. They all sold ceramic cartridges but none of the descriptions mentioned the valves. Is there some sort of list or resource you can point me towards?

Hi, I am eager to replace this shower faucet that is looong over due but cannot find the manufacturer. If anybody knows whose logo it is please do tell me. Thanks, Evgeny.