Sorry for the delay in replying guys.
OK so the wife had the SC430 previously and now the grandchildren are a little bigger she wanted something easier for them to fit.
The IS250c seemed bigger in the back which generally for the grandkids was fine, unfortunately anyone else will struggle to get in and out, even if you have the electric folding seats.
The car does occasionally struggle to find the right gear on a motorway if you want quick acceleration, but not really an issue as it was never bought for that. Also I need to be careful here as I said the previous car was an SC430 and that had no issues with acceleration!
The other odd thing for us and I do stress this is our opinion on a great car, we had a model without memory seats, a real pain as we have very different driving positions. No change holder, which again seems like a minor thing but a real pain.
On the plus side its a rare car and looks lovely with the roof down, especially in the blue and cream colour combo we had. Roof goes down quickly and easily. Reversing Cam and parking sensors will tell you if you are too close to something behind to open\shut the roof (nice touch).
So all in all nothing much wrong with the car, but she is insistent on having a car that we can get people in the back off hence why we changed.
Personally I will miss having a convertible.
Happy to answer any questions and do hope our one goes to someone on here.