since I don't use them much and only get to "borrow" one around the track it's tough to say.

I've heard they offer more power when compared to similar kv rated sensored motors. I've also been told they run cooler. I don't know if that means you can gear them higher perhaps? They made my lap times go up but barely, it was more the "feel" that I didn't like and I think with time I could be equally as fast or slow with them, depending on how you see my driving... lol.. some think fast, some think slow.

Keep in mind I'm not trying to say one is better than the other, more of try both and see what you think. Generally sensorless have a cost advantage/savings as well.