Generally low-bar done correctly, you will squat significantly bigger weights. For most body shapes it gives superior mechanics and also you are squatting to a more shallow depth (even a full low-bar squat is higher as your shins are more vertical).
I used to low-bar (quite poorly with hindsight), then switched to oly style after I herniated my L4/L5, an upright torso was much more comfortable during recovery.
Then I stuck with it because it's enjoyable, and I developed an interest in the Olympic lifts alongside PL. However my squat figures suck and I imagine I probably need to switch to low-bar at some point when I have a decent strength base and have the potential to be competitive at some reasonable level - although I fantasise about one day having a huge raw full oly squat, there is nothing manlier IMO