yeah, I have used non-runflats since 2003. hate the fact that tyres that cost nearly 3 times as much cannot (according to MINI and Manufactuer) be repaired, but the cheaper tyre with the thinner side walls can be repaired and used again. doesn't make sense to me...
Also tyre technology is much better these days and the reports of the old fashioned "blow outs" is much less, more likely to get a nail in your tyre (which normally drops the pressure a bit) and you can get that repaired rather than having to buy a new run-flat as it can't be repaired (according to MINI and Manufacturer).
IMHO the std tyres perform much better than run-flats, give a better ride and make the car more "alive".