Thanks for posting this OP, although I can only imagine how bored some of you must be answering RWI 'new guy' questions. For myself I've only begun to digest the multitude of pages connected with my hearts burning desire- the Omega 45mm UPO.
If I can figure out the preferred and reputable purchase pathway I'd buy one immediately, today, forthwith.
In the meantime I'm wearing out the 'search' function, trying to increase my knowledge base and to find out where the 'state-of-the-art' UPO rep is.
Am already developing a blister..