Bought a few to try recently, got the one in the picture GS11 posted but the best ones are the ones that look like the old Alpha Chrony's which have worked REALLY
well and out of hundreds of shots only missed 2 on the counter.

It's about 10fps lower than the Alpha Chrony which missed far more shots. Downside is that the app is just a web page that shows the last 10 shots where the
unit stores over 100 shots... I think mines 120. Well worth the money.

Slightly dearer is the HT-X3005 and 3006. I bought one each of those also. They are REALLY accurate (assuming my Alpha Chrony is accurate). Only 2fps
different to teh Alpha. The HT-X3005 has a smaller bore and the HT-X3006 has a larger bore and I think mine came with the wrong board.


My choice the one that looks like the Alpha Chrony, it's got WIFI if you prefer to use an app but it only shows the last 10 shots. Having to set it to fps
not mps is a pain but easy to do.

2nd choice the XT-3005 not the 3006.