What racing do you want to ge into - this will determine a big part on what to get!
if you want to keep doing supersprints there is a wide range of cars do choose from but if you want to get into, say iRace, MRA, IPRA, Prod sports etc - then you need to build it to a certain class - except for MRA and maybe iRace.
As Pete said - an EMO is a great base even as a stocker - performs well!
plenty of mods out there and good bang for buck.
1) My MX5 is cheap - 12k bought 95% complete to race
2) For what it is at the moment - it has potential to be quicker. I have 75rwkw and do 1.14.1 at wakefield, others with 90-100rwkw are doing 1.11.x
3) I have changed rotors, pads, oil, radiator - if I can do it anyone can LOL
4) dont know if you can grow into an MX5 LOL
5) all the time! haha
6) NFI!! LOL
so depending on your budget for supersprints - for 25k will get a decent EMO 7? maybe an 8?
10-15k will get you an awesome s13 and some good s14's
8-15k will get you a log booked MX5
so, what racing you interested in doing or moving towards?
Cheers,
Chris