We use SW (
Sign Wizard) version 4 everyday, day in and day out. It is fast and really cranks out the day to day vinyl cutting jobs.
Upgrading to version 6 (skip version 5) will mean learning the entire program over again for the most part. Version 6 is so far advanced that it hardly resembles version 4. I do not care for that.
I use version 5 & 6 but typically only for a special effect or shadow that version 4 doesn't have. Also occasionally the upgraded versions will vectorize an image better than 4 (but not always).
We use version 4 ninety eight percent of the time with only occasionally using the other versions.
I'm not a good one to ask about the upgraded versions of SW since I've not taken the time to learn them and what they will do over and above version 4.
I figure if I'm going to put in the effort to learn a new software program....it maybe should be Photoshop or CorelX3 or something with hands down greater designing power than SW maybe ever will have.