Uh...that "unbiblical" cord....would that be only for sinners or Muslims???Like several have posted, I have/use both. I was so disgusted with the LabRadar because the mic missed about every 3rd or 4th shot that I was about ready to throw it in the trash. The support at LabRadar was of little help other than asking me to try different settings. Really tough (and costly) to develop new loads when data for a shot is missing. A person here on LRH recommended a remote trigger switch and that helped.........except if used with an AR15 or other semi-automatic. Releasing the bolt to load a new round triggers the LabRadar and then you have to manually delete that shot or the data is not correct.
With the MagnetoSpeed, I have found it to be 100% reliable. No missed or extraneous shots. No picking up shot data from the guy shooting next to you.
I have tested load development with both the LabRadar and MagnetoSpeed on an AR15, .243 Win, 6BR, 6.5 CM, .30-06 Spfd and .338 Lapua Mag. Your mileage may vary, but is see no measurable difference in POI. Any difference I see is due to the shooter (me). When developing loads, I shoot for best speed node first and change seating depth for groups so if there is any POI shift, it really doesn't matter.
So the net/net for me is reliability and I have to give a slight advantage to MagnetoSpeed. The cost is slightly less so another nod to MagnetoSpeed. The third nod goes to MagnetoSpeed since it weighs less and is not as delicate as a LabRadar unit. At our range I have seen 3 LabRadar units with substantial damage after falling off the bench. The MagnetoSpeed has an unbiblical cord that attaches to the bayonet that is short enough that it catches the control box before hitting the concrete.
Anyway.....my 2 cents worth. YMMV.