Xiem Tools Medium Teardrop Titanium Fused Trimming Tool From  £17.45

Slightly sharper than a basic loop tool, but with enough flex in the steel to avoid chattering. The medium size is a bit smaller than standard Kemper teardrop / loop tool, so get the larger TFT03 model if you're expecting that size. That said, the slightly smaller loop and handle on the medium size is nice for tighter curves and more detailed trimming.

Feels good in your hand. Had expected a bit sharper tool, but it is ok.