So I guess the jury is still out on this and only time will tell. But I've made up my mind on how I'll proceed. For something that is good enough to sell or hang on the wall I will go acid-free, no OBA. The cost will be a small part of the effort.
Certainly as far as you are concerned that's great. Because who knows how many will read this thread in the future (considering messages on these forums almost always show up in the top few hits when googling anything photographic), I offer the following comment ... please don't take it as criticism regarding your personal decision or me trying to change your mind.
But as far as "the jury is still out" statement, this is true of anything to do with inkjet printing in general, and in fact is more applicable to inkjet printing and the inks themselves than it is to the OBA questions raised in this thread. OBA's have been used in papers for a lot longer than the ink's we currently use, and while there is still some "controversy" regarding their affect, we probably know more about them than about the rest of the current inkjet process ... after all it is still a very new technology and all we have to go on are accelerated aging test.
Certainly if trying to produce museum quality maximum archival prints then acid free non OBA papers may be in order. But there is plenty of evidence that OBA containing papers, as well as other paper making techniques are more than adequate for extreme print longevity ... certainly decades longer than any color process we had as little as 10-15 years ago when the only real option was silver halide technology.
I offer one comparison example. According to Wilhelm permanence ratings images printed with an Epson 7900 on Epson Exhibition Fiber, which is not a 100% acid free rag based paper (it is wood pulp based) and contains OBA's is rated at 90 years when displayed under glass, 150 years when displayed under UV filtered glass, 44 years when not protected at all and greater than 200 years in album dark storage, and this last test includes paper yellowing
. Compared to Somerset Velvet which is a 100% acid free cotton rag paper with no OBAs (and is a gorgeous paper) - 62 years framed under glass, 128 years under UV glass, 37 years when unprotected, and >200 years dark album storage (which again includes paper yellowing).
Personally I believe prints produced on todays top end inkjet printers on high quality media will in all likelihood come to the end of their useful life from some physical destruction(fire, water, lost, trashed), not from fading or yellowing. Those that do fade or yellow to the extreme, it will most likely result from improper care, and not from the properties of the ink and paper used to produce the print.