We took a trip to Ann's Pram in Petersfield today to try some ERF seats and I thought I tell you how we got on.
We have Seat Leon (2004) and were fairly sure the Besafe Izi Kid Isofix would fit. Sue at Ann's Prams got it fitted in the car with no problems and our LO looked very comfortable but the front seat had to be so far forward that it would have been uncomfortable and unsafe to travel in it. So we tried the Britax Max-way instead. It fitted perfectly with enough space for a front passenger. I suspect we would have problems if someone tall needed a lift but we're both short.
If you're thinking of buying an ERF seat can I encourage you to try it in your car first. We might have ended up with a seat we couldn't use if we hadn't taken the time to try it. I was also sure we should have an isofix seat but the max-way meets the same rigorous standards as the Besafe Kid even though it's held in with the seatbelt.