The difference between a 185 and a featherweight? The featherweight is a 1/2 size machine. I had to see one in person to understand just how small they really are-bordering on toy territory to me. Don't get me wrong, they're a high quality machine or they wouldn't be so popular no matter how cute they are, they're just tiny. The featherweight also is aluminum and only weighs about 11 lbs. Your machine is a 3/4 size machine and is going to weigh closer to 25lbs due to being bigger and cast iron. Featherweights do have a cute factor that other machines simply don't have but IMO yours is actually a more useful machine due to it's larger size.
Rodney