I vote Elise – i’ve had 2xS1s in my time and they are really good to live with
It’s like a modern old car – not much to go wrong but everything you need to have fun.
Some cost considerations and stuff to check:
If you go for a 118bhp standard K series car they have weak head gaskets and are sensitive to coolant temp
I’d always go for an S1 over S2 as I prefer the looks and lower weight
head gasket failure will set you back about £500 to put right at an independent specialist (assuming you pick up on it early and don’t warp the head….)
the bonnet cable release can fail and is a pig to replace £100 try it out when you test drive
tyres last quite a long time even with lead foot as the car is light – ditto brakes
bodywork damage can be quite expensive to repair and serious dings can mean replacing the front or rear fibre glass clamshell. Not something I had to do thankfully but will cost quite a lot to strip and paint etc
the front clam and sills get peppered by stone chips so you can use them as a bargaining tool
very early Elise had MMC brake disks and special pads which were very light but cost £££ to replace
When the S1 koni dampers fail you can buy cheaper better S2 series dampers (Bilstein) about £500 for all 4
118bhp is fun but the temptation to tune and upgrade is quite hard to resist
hope that helps some