As far as intuitive interfaces go, Ableton Live is hard to beat. If you what you're looking for is to quickly set up tracks for recording and start making music easily then I feel confident in saying that you'd be very happy with Live. As a composition tool it's excellent and, as I said above, I've found it plenty robust for doing full productions.
As for the subscription model, Ableton's approach has been to release major upgrades fairly far apart -- once every couple/few years and provide minor upgrades for free in between versions. Comparing Ableton's approach to Pro Tools seems a little apples to oranges since I seem to recall that a complaint about Pro Tools before they went to the subscription model was that they were releasing major (costly) version updates at much faster pace than what Ableton has done so far.