The BCM allows more of a hook and drag back due to the bigger ear design. While the Raptor has more of a flick feel. It depends on how you like to grab something. I sold my BCM and have all raptors now.
I can see how the Raptor might feel like your finger may slip off. Hand size plays an important part. The BCM feels like your grabbing a knob to me. Buy both and sell the other for 90% of cost. Its one of the most sought after upgrades on an AR.
I have not used the BCM, however as far as the cost differential goes, I have purchased 5 Raptors at various times when they were on sale for $69 each. I’m not sure I would pay full price for them but when on sale I grab them. The Raptors are all I run on my weapons.
The only ambi charging handle I’d take over a Raptor is the KAC ambi CH & as much as I love KAC the asking price for the KAC ambi CH makes me LOL, so Raptor it is.
I have a both the BCM Mod 44 and Raptor. The BCM Mod 44 is a very well made and tough product. The AXTS Raptor is also very well made. I think the Mod 44 might be slightly tougher (based on looks) but it’s hard to say for sure as my Raptors and Mod 44s have showed zero signs of weakness. Go with whichever of the two you like best because IMO you can’t go wrong with either one.
I had one BCM ambi that exploded before I ever fired the gun I installed it in and one that was fine. BCM replaced it promptly, but never had a problem with Raptors, so I use those now.