I have a Rally Motus and love it. I specifically went for the belt drive and hub gears.
To help with punctures they are fitted with Garddi "double ended" inner tubes which you can replace without the need to remove the wheel....(which I have needed to do a few times). Not sure why Raleigh stopped doing belt drives??
I also note that on their current range of bikes the mileage range is a lot lower than it was??.....eg mine was advertised with a range of 105 miles, (in real life I can get around 90), but the greatest range they advertise now is 70miles?? (unless they have changed the way they calculate range now??)
As mine was a free swap in for a cheaper ebike (Raleigh Array) which had problem I was not given any choice - it was actually pretty good fo them to do that so it was a good deal for me!
so I got the lowest version with chain, derailleur gears, the cheapest controller and the 300 Wh battery
The battery is currently saying ti can do about 60 miles on full charge - but if I planned on getting to that I would expect to do that last couple of miles with no assist
but it has done 12,000+ miles so it is doing pretty well
I hav ebeen usinf Marathon tyre with slime (or similar) for ages and I get very few punctures
I did have one once and found 7 other thorns and slivers of metal in the tyre while I was checking it - so it seems to work!
I do find I have to get rid of the slime every year or so otherwise it gets gungy and doesn't work so well
It also seems to not work so well in cold weather - I assume it is less flexible so can;t fill the holes as easily?????
As far as I know they stopped doing the 300 battery fairly soon after I got mine and left it as just the 400 and 500 versions