I own the T1, , a ton of synths, MANY analogue and almost never sell a keyboard...
The A6 was out the door
Man, if you want a new analogue synth, there are so so SO many better options... and I'd say go for a few used.
If you want to go new, The Prophet 08 is a great choice.
If you want to go used, you gotta go for a Jupiter 8 or Jupiter 6 or a Prophet 5!
And then cheap, pick up an Oberheim Matrix 1000 (a Jupiter and Oberheim will give you so a great diverse pallette.
IMO, the A6 is plastic sounding... it's analogue, but man, it sounds worse than many virtuals out there, blech
-andrews