So I picked up a Nitecore i4 thinking I'd like it... and I don't.... So I need some opinions.
You didn't say what you DIDN'T LIKE about the Nitecore i4. That would be a big help in providing advice for something else.
I've had a Pila, an Xtar WP6 XII, an Xtar MP2, and a Nitecore i4. Of those three (and based upon my experience with the particular models) I prefer the Pila > Nitecore > Xtar.
The Pila was my first charger. I served me well for well over a year, but one of the charging bays just stopped working.
I had ordered the Xtar MP2 specifically to charge the high number of 18350 batteries I had. The springs in this charger are flimsy and make inserting the batteries difficult. I rarely use this charger.
I ordered the Xtar 6 bay charger to replace the two bay Pila because over the years time I had accumulated a lot of batteries and needed more than just 2 bays. This charger uses flimsy springs to hold the batteries in the bays and will not contain my 18350 batteries - they pop out of the bays.
I then ordered the Nitecore i4. It has become my primary charger, charging 14500, 18350, 18490, and 18650 size batteries and does that in a very reasonable time.