scook
Here is the old table of features comparing MC6 touch and SONAR X2 http://www.cakewalk.com/Documentation/defaultJA.aspx?Doc=Music%20Creator%206%20Touch&Lang=JP&Req=Comparison.html
Here is the new features page for X3 http://www.cakewalk.com/products/sonar/versions.aspx
 
All the plug-ins and expansion packs that you are using in MC6 will work in X3.

Here's a comp chart with Music Creator 6 Touch and SONAR X3.
 
http://steamcommunity.com.../0/630800443023442960/

backwoods
Owning MC gives you the option to get Sonar for $40 on Steam until I think Jan2.
 
I don't know that MC is a 64bit app, and I don't know that it can record more than 2 inputs simul- I may be wrong on these points.
 
For $40 X3 is a no brainer as it is easily Cakewalk's best ever DAW.

Thanks, that helps me a lot.. Yes, the Upgrade is very intersting.. But i have first Magix Music Studio, than Reaper and now Music Creator.. But never make a really song :D
But this Offer is too good to be ignored, i think..
 
Maybe in Future will be upgrades to an higher Versions.. The Pro-Version has very interesting Instruments, like the Guitar App...