MX5 maybe the 'boring choice' because they are the most common but they are common because they are great. Incredibly good fun, simple and look great. I've driven TF's and didn't like the driving position. Didn't feel nearly as comfortable to drive quickly but that maybe because I've spent so much time in Mxs. If I could only have one 'real world' sportscar for the rest of my life, it would probably be an MX.
Mk3 MR2's have a good rep for handling but I'd argue that they aren't as pretty as a Mk1 MX and with them being mid engined, I'd guess (it is completely without any practical knowledge) that they are bit more of a pain to work on.