Theta Gen Va or what ?

I am currently trying to decide whether to buy a second hand Gen Va HDCD(Made 1995 - (£2000). Does any body have suggestions or what else would be recommended. I have the following on my list.

Mark Levinson 36S
Mark Levinson 360S
Theta Gen V111
Apogee DAC
P.S. Did the Gen Va change between 1995 and 2001

Thanks in adance
Audiomeca, Dodson and Audio Logic if you want a very good tube DAC. The Audio Notes are also good.