I would do it, for two reasons - it is deadly cheap, so any upgrade for that price would be a no-brainer. Second, while easel does not have some things that Vue 4 has (so I hear), you would still have a copy of Vue 4 on your machine, correct, so then you would have the benefit of the Easel features with the features in Vue 4. I say go for it.

"Walk down the right back alley in Sin City, and you can find anything."