I have a 16 Vegas on e450, buddy has Four Winds 22 on e450. We both tow open car trailers with comparable drag cars.
We travelled to Memphis TN from Florida last year together. Each fuel stop was within tenths either way.
The only advantage Vegas seem to have is high speed stability likely due to 32" longer wheelbase.
We both get 9 to 11 MPG with v-10/6 spd.
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