Bolt togther converters are pricy (Neal Chance = $1700) but it might be the last one you will ever buy.
You can change to any stall you want (no shipping fees or waiting 1 or 2 weeks) for long or short tracks, different altitudes, etc.
You can clean them if you have a failure.
You can inspect or freshen up if you "wonder" if you have a problem.
Dave