330 RXS would be my ideal choice - one of the nicest feeling balls out there
E6 is a nice all round cheaper option
Srixon is always another choice
A deal on a Z Star and I'm all over it
AD333 for the cheap option
Money no object I'd probably play Pro V but I lose too many balls to justify the cost.
That would also put me off the MPS (although I've enjoyed the ones I won on the Forum Day
Right now I'm using the D201 and have to say it's very nice - nice feel with the putter (which is the main thing for me) and all round good.
If I'm totally honest - any half decent ball is OK - I can't really tell the difference between most balls.... My mates have no issues playing Top Flites and Dunlops - I secretly apologise to my putter if I concede a putt and knock their ball back to them....