I bought a Centerpoint Dagger 370 crossbow yesterday. I have bolts and fieldpoints, but am considering getting in the stand this weekend and have no idea which broadhead to use. After about a week of preliminary research, my head is spinning!
Any recommendations?

(bow is 370fps, and not sure that the grain weight of the stock bolts is)

Pick a reputable fixed blade, shoot it to confirm accuracy, go hunt. My preference is three blade Muzzys. Yep, if you try to figure out which one is "best", your head will spin.

I know little to nothing about bolts. However, the bolt will be (should be) spined according to your bow's poundage. A heavier broadhead will cause the bolt to bend more than will a lighter head. If your field points are flying well and are accurate, pick a broadhead that weighs the same.

I have shot a fair number of deer with a crossbow using the same heads that I use in my vertical bow. Those heads are the Thunderhead 100 gr. 3 blade.