I've always been into the movie thing..and thus "AV", for my high end systems, needed to be a reality -as opposed to JUST a high end 2 ch system for music. That said though, when it came down to AV Prepro selection for myself, I've always focused on the following priorities when choosing (I like good sound) , and that's whether it can, first and foremost, offer GREAT DYNAMICS (must for movies) offers superb clarity and resolution/detail, has a ROOM EQ of some success built in (yes, must be effective tool, cause rooms typically need lots of acoustics help), must at least pass 1080p video -with no hitches for switching capabilities- and must be reasonably priced -prefer used! ..cause, as an audiophile relative kinda tool, I KNOW If it's not likely gunna be the very last word in refined mid-range, top end air, super deep sound-staging, and other audiophile niceties and comparisons to a very very good high end 2 channel analog preamp, or whatever,anyways ..so I'm not too worried about it. ..cause I can always just loop in some..um...other very good, high end 2 ch analog preamp or whatever instead!! Problem solved, basically. Yup, yup.
That said, of old, I always liked budget "over performers", like the old Acurus Act 3, Yamaha budget AV receivers (as PREPRO'S ONLY), but never more pricey than the otherwise acceptably dynamic -yet delightfully more refined and detailed - Krell AV pre's!!! (don't care so much, though, for the non-audiophile more custom oriented video first processors, like the Lexicons though) Never really wanted to spend a whole lot more, really... used, of course.
Besides all of that, for newer current AV pre's, with all the latest features and processing offerings, may I suggest you consider my check points and requirements, as well as my position on "hiend 2 channel options" for your music needs with the system!
Sure, you could spend a bazillion dollars on some stage 9 Theta Casa-something-er-other..., er a Meridian digital front end contraption, er an otherwise nice Macintosh's, Anthem, Classe, or other top end AV piece, ..and so on. But face it. No matter what you spend on some soon to be obsolete, RAPIDLY DEPRECIATING AV pre anyway...and, an "audiophile aspired" piece, it will never offer the return for your money when it comes to 2 channel, basically, compared to a multitude of used hiend 2 ch preamp offerings you could have chosen instead?!!
So, as with most "trade-able", soon to be relatively obsolete anyway AV gear, ..I say...be prudent, and spend wisely! Then you can trade the stuff a year or two later and get your monies back... WINNING!