Yes getting in and out is a little easier, not a big difference as it's only an inch difference in height. I had a loaner 3 series for a couple days, and it was very difficult to get in and out, especially since I am 6' 3 and have back problems!
As far as the ride quality, the cornering, handling etc. has noticeably improved. I have the dynamic handling pkg. and active steering as well, so there is no body roll and it feels very responsive. The ride is firmer of course with the lower springs but not so bad that it bottoms out or anything! It will bottom out over bumps if you drop it 2.0". I have since installed 21" wheels which makes the ride even firmer yet, but again not anything too drastic. It's still comfortable.
If you live in a city where there are a lot of pot holes and the roads are very bad, then I would either drop the car OR install 21" wheels. If the roads are descent, then go with both.
