This is a tough question that brings up more questions. What kind of uses are you wanting it for? Do you have a size on mind? How much are you wanting to spend? If you are wanting a knife to use occasionally to open mail and maybe pick at your fingernails, a single blade would be great for that. If you want to do some whittling, tearing down boxes, slicing food, opening mail and maybe pick at your fingernails, I would think a multiblade would be more ideal. That way you can keep a blade razor sharp and one or more for more utilitarian tasks. The size is something that's tough to suggest to some one else. There is a large group of people here that pack around a tiny 3 1/4" knife everyday and that knife does everything they want and more. While others opt for larger knives with bigger handles. It's a give and take. Larger knifes take up more room in the pocket but can handle larger jobs. Smaller knives ride more comfortably in the pocket but might not be able to handle some of the larger jobs. Although, they might surprise you woth what they can do. It comes back to what you want to use your new knife for. The price is almost a moot point as there are great knives to be had at almost any price. A Rough Rider knife is an excellent starting knife at a minimum of cost. If you don't know what you want, it's a great place to start with to try out a pattern and size. If you hate it, your not put much money. They price goes up from there, but there's no shame is buying a less expensive knife to try it out or if that's what your budget allows.
All that being said, I think a standard 4 1/8" trapper is tough to beat.
Ben
