Whats the best data logger

[RaiderX7]

I seached and couldnt come up with a clear choice. so i though i would as. What do you guys think is the best datalogger. Just for data logging. i found obddiagnostics.com its cheap and looks like it would work good. I would primarly would use it for looking at timing and detenation and knock and all that good stuff. THank for any help you can give me.