I'd suggest to have 2 - 50' hoses. That should cover any RV use. I also have a 25' potable water hose. The best small hoses are made of rubber, easy to roll and the most durable. If there is sticker-shock on the rubber hoses, just buy a no-kink hose from Swan, Apex, etc.
Most folks are clueless when it comes to rolling up a hose, hence, there are problems with longer hoses. Number one tip is to stretch out your hose before coiling and coil loosely from one end.
The gadget hoses are just that, a gadget for folks that can't roll up a hose.