Live resin/rosin carts

New to concentrates,

I have no dab rig, but would like to start trying some of the concentrates like live rosin, budder, terp sugar etc.

My local dispensary has live rosin carts, and my question is.. are the vape pens as good as dab rig? And if it's a live rosin, is there a shelf life? Or special storage requirements?

Thanks guys