There is no difference in parts between the 20i and 28i
It is just a matter of remapping and 'unlocking' some sensors in the powerbox as far as I've read.
Telling the 35i is better is not relevant since the question was about the differences between the 20i or the 28i.
That's like asking the difference between a 530D and a 535D and advising them, hey, get an M5.
In Belgium taxes for buying a car as a company car are ridiculous now. I planned on buying a Cayman first but paying over 10k (same for the 35i) a year as an EXTRA tax on top of the road tax, insurance and the first 'new car' subscription tax (not sure how to say it in english). I personally would have paid over 1000 euro's a month in TAXES & insurance ALONE without a single fuel fillup or even buying/renting the car
