I like the DR Nickle Sunbeams, The Nickle is a lot softer than the stainless steel stings. The Sunbeams have interesting harmonic overtones that really make my fretless sing.
Well, $60 later (including shipping) I just ordered a set of TI Nickel Flats (.043 - .100, JF344) from Juststrings.com. For that price I hope they're as good as ya'all are saying!