I switched from a Mk1 Roadster to S1 Aero this summer, having coveted an Aero for many years. You are right, not a huge gap in price now. Although the S1's are reaching their 10th birthdays, mine having already celebrated this landmark. So they are no longer spring chickens, however 4 months in and 1k done, nothing to report other than a handbrake adjustment needed.
The gear knob is fine on mine, although I think I have an upgrade on standard, not sure it's a bit faded. The sensors would be very useful, I don't usually stop often but you cannot be too careful, no bumpers and parts that are a bit rare to find.
I have been concerned at how low the car is to the road and my exhausts will make contact in the dips. The roadster was low but the Aero looks even lower around the sump, a recent ferry trip was worrying.
My passengers also comment on the extra comfort over the previous trads, but no suprise there, with double wishbones instead of cart springs.
Wish you well on your search for the right car, I notice RTCC has a nice looking S1 on the website.
Dave
