Good instructors for in-car lessons for G test?

Can anyone recommend a good instructor for in-car lessons? I'm working towards my G and need a few good lessons plus the use of their car for the test itself.

I've checked the MTO-approved list but there are a lot and many of them don't offer just private in-car lessons (they offer a package of I-class + in-car which I don't need).

Anywhere in GTA (but downtown preferred).

Thanks in advance!