Get the inride...its fine. don't let the price tag put you under for a high end trainer. I too used the old school trainer for a few years before upgrading to a smart trainer. NOTHING wrong with a electric smart dumb trainer for Zwift. Ride on for fitness and enjoy the work outs.
Smart trainers are awesome but not necessary. You can always upshift for hills or use them for interval hits, or cadence drills. there are very effective training work arounds.