Self propelled haybine

I'm looking for input on used self propelled haybines. Currently I've been running two new Holland 495's. How much more efficient is a self propelled unit? Should stay with around a 12' cut for my rake. I have a great new Holland dealer close, really nothing else unless you drive to hours one way. I've heard that the 1495's can get hung up on soft ground. Any input would be greatly appreciated. thanks

Self propelled haybine