Whatever you choose, keep previous software you have, just to maintain ol design in snap.

Been a long time P-CAD user, always been pleased with, the few time I asked for support they were pretty fast, so Altium should be the same.

For me, after over 15 years with the same software "thinking"/"minding"/"Workflow", moving to another software (Eagle) have been a huge pain in the a$$. Not to mention all the time lost to re-create custom parts in the library.

I'll probably go back to Altium one day.