Audio research LS25 any opinions


I have been thinking of buying an LS25 and than eventually upgrading it to the mkII version. Can anyone give me some feedback on newew AR pre amps.
jrud
I own one (2yrs.) and think is is awesome, especially with NOS tubes. I have heard the MKII as well, and it is really nice (almost current REF2 level). I give a thumbs up!
I own a Ref 2. I'm not sure I want to upgrade and have SS components added as well as different tubes. ARC has been having problems with Sovtek 6992 so they are dumping 6992. I use NOS Mullards and they work great. The LS25 is an excellent preamp, I'm not sure the MkII is really better.
I use the LS25 mkI with a VT100 mkII. The como makes great music. Some people have been critical of the MKI. However, I have been very happy with its performance: Transparent, neutral, open, dynamic, smooth, musical, great soundstage. How does the LS25 MKI compare with the LS25 MKII?