First of all. I'd like to thank Herb and his associates for the great work they have accomplished. I am, or try to be, a "silent" participant in the forum and I try to visit it regularly. I learn tremendous amount even tho' I've been in the trenches for 25 years of MIDI and think I know everything. In my opinion, the VSL project will be looked upon as "the" seminal project in sampling for serious musicians. It is a labor of love for both its creators and users. There is no "but" in the following paragraph.
I've, also, experienced the dreaded "sucking" sound with legato note transitions. I've tried every "solution" and they've not worked to my satisfaction. I stumbled upon a solution which works for me (I write string arrangements, as a ghost, for film - and as you all know, it can be a bitch in this business to get past both the tin and the golden ears).
Well, I do get by, by layering a short "string sample," with attack removed, under the transition zone. I mix it low enough to obscure the transition but not loud as to obscure the VSL string sound which can be beautiful with judicious EQ and IR.
PS: The works of Jay Bacal and Beat K. are stunning!
Eli