I would strongly recommend a free one... FS Recorder (
www.fs-recorder.net). It's basically just a replay, but the standard one needs some help... here are the improvements I've noticed.
-Floating spot view doesn't shake (standard one does).
-Includes smoke (standard one doesn't).
-No sound issues (standard one fluctuates pitch up & down).
-Wheels will turn (they stay straight forward in standard).
-Includes traffic (standard one doesn't).
*The only downside is that it's max sample rate is 1/8sec, which is a little slow... That's probably the one advantage the standard has over the recorder.