Because I don't even like caliper/wrist style releases I don't use them, but they are the choice by the majority. Take a look at some of those made by True Ball. They are noted to have very good, crisp triggers. Check out the classifieds over on archery talk and you may find a decent used one. Maybe someone at a local club has an extra one they don't use any more. Maybe a local shop has a demo they can sell you for a little less money.

I have a very slightly used True Fire Hurricane that I'll sell for $30. That'll include shipping. It's got maybe 50 shots through it. If interested let me know. This is about $55- $60 retail release.

Personally I would save a little more money and buy something better than economy. Good releases last for many years and CHEAP usually means just that. Sorry to say, but archery is getting to be a very expensive sport and inexpensive and quality just don't fit in the same paragraph.

I've got about 8 releases and some of the cheaper ones cost me $35 some 30 years ago. My newer ones, of which I have four cost about $100 each, and I just ordered a new one that will be about $190. But I know It'll still work fine long after I'm dead.