I've had several 222/223/223AI Contender carbine barrels over the years. Replaced them all with several 17 caliber barrels. Straight across - the 17 Javelina and 17 Remington. But I have a bunch of other 17 cal Contender barrels too in 17HM2, 17HMR, 17AH, 17AB, 17M4 (some more than one of each) and have had others. Retired almost all of my 22 caliber firearms due to even flatter trajectory, minimal pelt damage and more hydrostatic shock with the 17's, and have a bunch of 17 cal rifles as well in almost all of these chambers.
For my shooting/hunting I see no advantage over the 17's with the .204 - why I'll never buy one. If it gets too windy for the 17's at longer ranges I use 24/25/26 caliber.
YMMV
L.