Music is excellent therapy for such losses & other tough times, but I'm sure you know that already.
For anyone's curiosity I'll chime in with 2 things about GPO.
1. I got GPO many years ago in a deal thru Cakewalk here for $99.00. The Key Card license system is just a .png image that you just drag & drop onto the GUI and it's good to go from there on.
I don't imagine that's changed since then, as it's all too easy. I wish all were like that.
2. The one thing that I [and some others according to their forums] didn't like, was that there was no way to control the amount of vibrato on the solo violins. It's always on. Same amount, same intensity.
IIRC, I believe there is a short delay before it kicks in to emulate what most players would do, however in reality, not every player would employ vibrato each and every single time on every passage they play. On rare occasion, they wouldn't.
But this option is not provided.
Even Gary Garritan chimed in on the forum after numerous requests and said that it would be way to hard to implement an update to offer this as an option, so it won't ever be done - not without re-recording the samples - which of course would be way to expensive to do - like basically starting all over. He said that when recording the players, that's how they played it and no one thought to ask for straight none-vibrato samples at the time, so none were recorded.
For this reason, I only use it for things other than strings, ie; the piano is actually quite good, as are the flutes, etc.
I switched to Kirk Hunter's Concert Strings 2 and the newest Solo Strings. I got them during one of his 2 sales this year - both at 50% off.
I've since picked up Concert Brass as well.
@ Bit: If you're still looking, check out Kirk Hunter's stuff - it's actually a pretty good deal - when on sale.
[Concert Strings 2 & Concert Brass work in Kontakt 4 while Solo Strings requires K5.]