Have you ever grown Romas? I have. The home garden ones are much richer and sweeter. ;-d
My favorite are plum tomatoes.
Even sweet 100's can be peeled and stored. They are so small, blanch them and pop them out of the entire skin with a gentle pinch. Not as much work as you'd imagine.
See above. :-)
There never is, and probably never will be, a good comparison in flavor between store bought and vine ripe tomatoes. The only ones that come close are the cluster "on the vine" tomatoes that our local store sells. They are worth the premium price, but I'd still rather hit the local farmers market if I've none of my own on hand.
If I over-produce (which is common for tomatoes in season sometimes), I'll just use the smaller pressure cooker and can a few in a couple of 1 pint jars.