The make up of the steel has a lot to do with how sharp a blade will stay as well as what kind of an edge you put on it. For fine work I put a dual fine edge on the blade that is razor sharp but does not stay that way for long periods. the last hog I skinned I had to touch up the blades a couple times on the steel.
I suggest you go to a restaraunt supply store and get a filet knife there. It will be desent but not really expensive. The people that shop at them want good quality but don't spend a lot for blades. It will not come with a belt sheath but it will come with a plastic blade wrap. I have one to take the silver skin off of back straps and other cuts with out hacking off large sections of edible meat.
For my hunting knife I use only the course Dimond sharpener at a steep angle when sharping. The blade stays sharp but the rough edges act as micro serations and it works well for rope, sausage, cheese for lunch, and other chores around camp as well as a gutting. I too have learned that a smaller knife if more usefull in gutting and skinning. As to small game I don't save the pelts and a few slices and my feet and hands work best to pull off the hide like Pajamas.
If your looking for a bigish knife that is sharp, will hold and edge and take another one. The Cold Steel Kubun is a 5.5" tanto blade that is about 1/8 of an inch thick, rubber handle, comes in a plastic sheath. I think I paid under $25 for it with Tax. If you rinse it off after a day of fishing or hunting it should last you a while if you let it dry. A little vegtable oil or olive oil on the blade will protect it. I know there are a lot of better sprays like Sheath, Boeshield, and others that have a spray wax and protects for a long time, and even WD-40 works well, but if you plan on using it to make a sandwitch, the vegtable and olive oil taste better. With the plastic sheath I guess I should say Kydex, you can hose it, all the salt water, blood, and fish or critter goo out. I keep it in my hunting gear as a spare knife that ends up doing the kitchen duties most of the time like cutting onions, mushrooms, slicing roasts, and opening packages. And at $25 bucks if you mis use it, knick the blade, let it rust, or loose it, it can easily be replaced. Not so sure I would use anything but an oyster knife to pry open a shell. They are dull for a reason! As far as prying with a knife for anything. they are not made for that. Go get a pry bar. Use the right tool for the right job. There is no one tool that will do everything really well. That's why we have tool boxes, knife rolls, a golf bag, and a gun safe.
Good luck.