What is the best sounding Mahler symphony cycle?


Folks... I love Mahler but my two versions of the 5th sound very low-fi. I am looking for a well --- really well --- recorded 5th on redbook CD --- or better still... a whole mahler symphony cycle that is audiophile (or... near audiophile quality.

Any help would be appreciated
robsker
I'm going to go with Maris Jansonn/Concertgebou for the 5th. Very good performance and very good sonics. I don't have a complete cycle that is uniformly good. I do like the David Zinman on RCA, especially the 3rd and 10th.
MTT on SFSO (SACD) His 5th is excellent.
Abbado on EuroArts and Accentus (BluRay) #8 yet to come

Many (perhaps too many) excellent Mahler sets but you get to choose.
If you like Bernstein, "Mahler: The Complete Symphonies" box set has Lenny and the NYP at their best. It contains performances from the 1960s and has the most amazing remastering of any classical CD I've ever heard.
(DSD-remastered, 2008).

For a single 5th with good sound, try Abbado/Berlin Philharmonic (1993)