I’ve got two identical planes, one with an A60-20S outrunner and one with the C50-14XL. The A60 is turning an 18x12 and the C50 a 20x15. The C50 has considerably more thrust, and yes, more noise (you definitely hear the gears.)

The C50 tends to draw about 10% more out of the packs for a typical flight.

I believe the C50 will be the lighter choice and easier to install (I don’t know of any instances where an inrunner took the nose off of an airplane…I personally know of six outrunners that have departed!)

The C50 requires maintenance.

I’m very happy with the C50 so far but only have about 30 flights on it (compared to over 300 maintenance/issue free flights on the outrunner.) If grease is all it needs, I’m sold on the C50.

I’d recommend the C50 for ease of installation and lighter weight.