smartdriver
all the 500s you have driven being how many exactly?
i have a brand new one and its great to drive- now, this being purely subjective, i have driven a mini many times and that was far more lumpy and unpleasant.
and, by way of a bonus, most 500s are half as much as minis anyway, which are fantastically overpriced. 500s are also blessed with great quality, whereas minis can rattle like they belong in a cot.
so i guess you should just get a mini and stay out of the 500- join the herd.