I have both - believe it or not, I got 6 first - and it really po'd me to find out that you are only allowed 4 installs of this very expensive program that YOU pay $$$$ for.....
I've already used two installs (bought a new computer)
but I also bought 5 to use on my laptop.. oh yea, you also HAVE to have internet access to even install 6...
5 does exactly what you want to do - I love it for that - and the new fabric of the month files work for both 5 and 6 (make sure you go get those)...
If I had gotten 5 first I wouldn't have upgraded...
and before somebody smugly says 'you knew it only had four installs before you bought it' - no I did NOT - I ordered it from JoAnns online (best price) and it does not say that - it does say it on the box - which of course, I saw when I got the box.....
I love it for just what you said - trying this, that or the other thing before cutting fabric, etc...
you will be happy with 5, if you don't care about the restrictions (we are all thieves doncha know) of 6, then it will do also..