I have had an opportunity now to ride the Verve 3 and FX3 several different times . Around 100 miles on both Bikes : The Verve is a far better choice for an aging Rider : Regardless of the shape your in.
In a race of 200-300 yards . Fresh off the Start . The FX3 is probably a little faster Sprinter: BuTTTTTT for endurance and several miles : The verve will get there first because it's not as fatiguing to ride. Especially when you start to tire near the end of the ride
The Verve is a much smoother ride. So over all it really does end up allowing quicker and longer rides without getting wore out : Muscles you haven't used can be re-conditioned : Buttt Regardless of Tone you have old bones