Thats kind of what I thought too RM. I;m sure I've read on mini2 a non Isofix is just as safe as an Isofix provided it is fitted correctly. Isofix was introduced to illiminate incorrectly fitted seats.
What I didn't really appreciate before getting involved in the postings on mini2 is that different seats have different ratings for safety. They all obviously have to meet the safety standards but others better than others. Rakey is a good souce of info/advice.
Just bought the Maxi Cosi Tobi and very pleased with it!