The VV is a great unit - essentially, the little brother of the MVP (same functionality, smaller battery and resultant form factor). Many, many people swear by them. The protank family is very popular as well. It's chief competitor as a BCC is probably the aspire.
This would be a fine upgrade from your current gear and you're liable to use it in some capacity for a long time.
Comparable functionality to the VV would come from any number of tube style devices, which would use a separate battery inserted into the tube (think "flashlight"). The SVD mentioned above is a very good example. Other popular models would be the Zmax and the Vamo. They are larger than the VV.
As far a performance goes, you wouldn't go wrong with any of these devices. After that, it's down to things like size, weight, button controls (the Zmax uses 1 button, the others use 3, and each of the latter use slightly different methods), and the not-to-be-trivialized aesthetic taste. The SVD looks like a steampunk lightsaber, the Zmax is a sleek tube, the Vamo is in between the two.
Again, what you've suggested for yourself would be great - a fine, fine setup. If you move on after that (chances are high that you will - do not worry about that for now), you'd still have it as a backup in case whatever future rig you use is unavailable for whatever reason (it happens... oh lord, it happens).