You might like to check out this review
https://toolsproper.com/the-best-moisture-meter/I had the Wagner and it was very good if a bit spendy. Benefits are that it measures moisture much deeper inside the wood which, for your purposes would have thought ideal. The pin ones really only measure the moisture as far as their pins go. I have a couple of them...I could take a log...read the outside and it gave a good moisture rating. Split the log and check the newly exposed faces and dampa as anything still....as you'd expect.
My take on logs for fires is to split them when they are freshly felled. It's a fag, I know, but you're going to do it at some time so why not do it immediately ? It will dry quicker and be easier to split.
Of course, I always practice what I preach
If opportunity doesn't knock, build a door.