Resurrecting this thread as I recently purchased the VSL Synchron Bosendorfer Imperial, and wanted to give my impressions.
This is actually my first experience with any of the VSL instruments. I'd been curious about them for quite a while, but kept resisting taking the plunge for 2 main reasons: 1) the high cost in comparison with other libraries, and 2) the annoying dongle requirement.
Well, they recently did away w/ the dongle requirement, the dollar happens to be at its strongest vs. the euro in years, and they've been running a sale for the past several weeks, so I took this all as a sign that it was finally time to give in to the temptation.
I was fully prepared to return it if it didn't live up to expectations or didn't offer a meaningful improvement in the overall playing experience vs. other VST's I own or have tried (Garritan, Noire, Ravenscroft, Grandeur, Maverick Walker D, Pianoteq), but I'm happy to say that I certainly won't be returning this - it's absolutely stunning. If anything, it exceeds whatever expectations I'd had coming in by a pretty wide margin.
First of all, the playability is absolutely superb - the best I've ever experienced from any VST, and easily besting my previous reference in this department (Garritan). It responds to anything you throw at it without breaking a sweat, and picks up small nuances and changes in touch far more effectively and realistically than any other digital instrument I've tried.
The quality of the samples is very impressive - extremely clear, clean and deep. One of the reasons I was attracted to the Bosendorfer Imperial was because of its particular sound profile which offers a more defined, sculpted sound in comparison to, say, a Steinway, which tends to a more blended, rich sound. That quality is very faithfully captured in the VSL rendering - even when playing thick chords, the overall sound remains amazingly clear and defined while still satisfyingly full.
I would not exactly call it an intimate experience - you really feel like you are in front of a large, powerful, concert instrument, so if you are trying to recreate the sense of playing in small jazz club late at night, this probably isn't going to do it for you. However, it is capable of an impressive degree of warmth and delicacy if you dial in the settings.
Speaking of settings, as far as I'm concerned the Synchron piano player is a model of excellent UI design, usability and functionality compared to most other systems (ahem, Kontakt). It's very well laid out, intuitive to use and offers an impressive array of useful parameters for customizing the sound and midi controls. Kontakt actually offers a similar level of customization features, however its usability is atrocious, and it looks like it was designed to run on Microsoft Windows circa 1996. It literally took me 6 months to discover that you could adjust the velocity curve. With the Synchron player, I had more or less figured out how to operate everything I needed after just a few hours of playing around. Extra bonus points for being able to expand the window up to 200% so that it fits nicely in my 27"monitor.
So all in all, I couldn't be happier with this. I think the only downside is that I fear I'm eventually going to have to try out all the VSL Synchron pianos, and probably upgrade to the full version of the Imperial at some point, which could be very hard on my wallet. 😭
Seriously, though - if I was VSL I would strongly consider also offering a "Light" version of all their Synchron pianos, with just a single close microphone, and price it around $150-200 so that it competes directly with the likes of Garritan, Ravenscroft, Noire, NI, etc. Then offer the standard and full versions at the existing price levels.
I know they have a generous return policy, but there is something of a psychological barrier involved with forking over $300-$500 in comparison to $150, especially when no other competitor is really operating in this price category. I have a feeling that they would be able to more easily grab a segment of curious but hesitant customers who might then be convinced to upgrade to the standard or full versions. I certainly would have tried it out a lot sooner if this was an option. Anyway, just my $0.02.