If you are on K9, I think it's kinda dumb...Don't know bout the disappearing pianos but why upgrade from 9??? just a few dum dum additions.  When I upgraded from 7 it was to get the new version of Kontakt and a bunch of there other big programs... Guitar Rig, Rektor (???), and Battery.   
 
I would imagine 11 will be the heavy upgrade in their Kontakt cycle again. And it was 99 bucks.  No problem.

Doktor Avalanche
I just read on Facebook that when you upgrade from 9 to 10 some pianos disappear as they are superseded?

Is this really true? Um what about my fragile mix?

Not true...I still have ALL my pianos...they only disappear if you uninstall them...

And K10 has some great pianos ... at last.

Fleer
And K10 has some great pianos ... at last.

I agree...I very much like them...

Jeezz, can't find a buyer for my K10 bundle and ordered my K10 Ultimate already 
Well, just looking at stacked boxes will give some form of satisfaction ...

stevec

Bonzos Ghost
I've got Komplete 9, (from last years sale) and will stick with that version for now. Not enough to interest me in upgrading at this point for what I do. I've also bought a few Kontakt libraries from here and there, so I have pretty much what I need, without springing for Ultimate. I still use a lot of hardware synths & keyboards, so I don't use Komplete as much as I could if I was strictly ITB.
 
All in all, Komplete is almost a no brainer when it's on sale, considering the amount of content you get. It's a great bundle. If you're eye-balling Ultimate, then you really have to decide whether you'll use that extra content.

I'm in a similar boat myself.  I took the Kontakt cross-grade > Komplete upgrade route last year during the sale, which was great, and having been loving every minute of it since.  Aside from SONAR itself it's been my single best and most used software investment.
 
However....  K10 just isn't quite forcing me to buy.  K10U?  Yeah, now that I could do.   If I only had the cash.     At one point I mis-read the $177 JRR sale as going from K9 to K10U, but was sadly let-down when I realized that it would still be $300+.    Ah well, there's always version 11...
 

This^^^is exactly what I went through as well. I was cleaning out the couch for the $177.....just to find out I needed another $170.......
 
Fools seldom differ?

Mesh

stevec

Bonzos Ghost
I've got Komplete 9, (from last years sale) and will stick with that version for now. Not enough to interest me in upgrading at this point for what I do. I've also bought a few Kontakt libraries from here and there, so I have pretty much what I need, without springing for Ultimate. I still use a lot of hardware synths & keyboards, so I don't use Komplete as much as I could if I was strictly ITB.
 
All in all, Komplete is almost a no brainer when it's on sale, considering the amount of content you get. It's a great bundle. If you're eye-balling Ultimate, then you really have to decide whether you'll use that extra content.

I'm in a similar boat myself.  I took the Kontakt cross-grade > Komplete upgrade route last year during the sale, which was great, and having been loving every minute of it since.  Aside from SONAR itself it's been my single best and most used software investment.
 
However....  K10 just isn't quite forcing me to buy.  K10U?  Yeah, now that I could do.   If I only had the cash.     At one point I mis-read the $177 JRR sale as going from K9 to K10U, but was sadly let-down when I realized that it would still be $300+.    Ah well, there's always version 11...
 

This^^^is exactly what I went through as well. I was cleaning out the couch for the $177.....just to find out I needed another $170.......
 
Fools seldom differ?

Yup...   Fortunately I had only collected $1.77 before I realized my mistake.   Unfortunately it was all in pennies.   Ah well, like the say...  Sell A Vee!  
 

Fleer
Jeezz, can't find a buyer for my K10 bundle and ordered my K10 Ultimate already 
Well, just looking at stacked boxes will give some form of satisfaction ...

Maybe you'll have a better chance when K11 comes out?

bapu

Fleer
Jeezz, can't find a buyer for my K10 bundle and ordered my K10 Ultimate already 
Well, just looking at stacked boxes will give some form of satisfaction ...

Maybe you'll have a better chance when K11 comes out?

Or K10 Ultimate Komplete Edition

I should have my K9U to K10U upgrade on Monday.

I figure 11 is just around the corner but for $174 I don't mind being a couple of years behind in this case. There's the ProHorns for one. They've paid for the upgrade.