This forum ahs done expensive testing on meters. What works the best and is the easiest to use is the Kent Moore J33300-A meter. It will time several different ways. Probably the simplest is the pulse probe mode. You clean two locations. Install the probes. Power up the meter and press one rocker switch. Start engine and rev to 2000 rpm watching the meter timing and rpm on the digital display. You have just made a timing shot and know exactly withing a tenth of a degree what you timing is.These meters retail for around $800.00 but... You can buy them used on ebay all the time around 200 to 300 bucks. Just make sure you get the needed probes. The line clamp costs around $75.00. The harness is another $150.00 and the magnetic probe is around $400.00. Know what your buying before you buy. I can be of help if you find one and want to know if its all there. These meters have a microprocessor that does all the timing for you. No timing light to try to shoot the timing tab. Just clean, connect and start engine. Easy. Also the Kent Moore J33300 meter is an easier model and work the same but do not buy the one with the red display. Its a vacuum tube idea and when it fails there are no replacements available.