Best budget EMF meters for investigating stone circles - experiences?

Right, I've been doing amateur investigations around Stonehenge and the Rollright Stones for about three years now, and I'm finally ready to upgrade from my £15 mobile app (which is bollocks, let's be honest). Looking for a decent handheld EMF meter that won't break the bank but actually gives consistent readings.

I've got my eye on the TriField Natural EM Meter (about £80-90 on Amazon) but some forum posts suggest it's overkill for basic anomaly detection around ancient sites. Has anyone here got experience with budget alternatives? I'm mainly looking to detect electromagnetic spikes near standing stones and burial mounds - nothing too fancy.

Also, any tips on technique? Do you take readings at ground level, waist height, or does it matter? I've noticed some lads just waving them around randomly and I'm pretty sure that's not how it works.

The TriField is solid but honestly you can get a decent Meterk or Proster meter on eBay for £25-35 and they're nearly as good. I've tested both at Callanish in the Outer Hebrides and the readings were almost identical. The expensive ones just have better build quality.

Do you take readings at ground level, waist height, or does it matter?

This actually matters loads. Take readings at three heights minimum - ground, waist, and about 2 metres up (or head height if you can't reach higher). We found some wild fluctuations at the Grey Wethers circles in Devon that only showed up at exactly 1.2 metres. Weird stuff.

Save your money mate. I spent £200 on paranormal gear and used it twice. Now I just use my mobile's magnetometer app and a notebook. The 'anomalies' I found with the fancy meter were literally just power lines and telephone masts nearby. 🙄

What sort of anomalies are you hoping to find? Because if it's related to the supposed ancient energy vortices, you might want to pair the EMF meter with a thermal imaging camera instead. EMF spikes around Stonehenge are usually just from the visitor centre facilities or parked coaches. Thermal anomalies are far more interesting - we found cold spots near several of the heel stones that couldn't be explained by shade alone.