Have owned and shot R9, R20 and R29.
Have held R10.
R10 Is shorter than R20 and is less nose heavy.
Speed.
Speed with crossbow comes with prices.
More cable, string a d limb wear.
Speed/power could help a person shoot longer distances easier and yield more punch down range. So hunting bigger game R20 could have advantage.
For 20-50 yards R10 will do fine for hunting.
Get out to 60-70 yards R20 better choice.
Limbs on R10 are justice like R20. So R10 limbs not pulled back as much and should last a long long time.
Person wanting to shoot loads, R10 better choice.
Imo R10 is best value bow for the money Ravin has made thus far.
Take your extra money and buy you a press if you go R10 route.
Tree stand hunting for whitetail R9 and R10 both very good choices.
R10 is a crossbow if one take some care of will last longer than the current model crossbows imo. Shot for shot. Odds wise.
R10 will be easier on scopes vs R20.
Easier on target.
Easier on bolts.
Easier on fletching.
About all I can say.
I do like Ravin crossbows
But if an owner doesn’t have a press they will likely never know how good the bows can shoot.
Cheers.
Hope this helps.