RE: Shotgun hunting..
I have owned all three and to be honest the pardner was the nicest of the three in looks, build quality and fit and finish, not to mention quite a bit less in price. Mine didn't fit me too well though since I am little. It is basically a 870 clone but uses mossberg chokes.
The down side is they are made in china and there is not much after market support for them. You can buy nearly anything you want for an 870 or 500 if you want it, and if it breaks you know parts are readily available. This may not be the case with the Chinese made pardner.
The nova's are very nice guns, but in my opinion ugly as sin and barrels and other parts are expensive. You could get a new mossberg combo for a what a barrel will cost for a nova, at least the ones I have looked at.
I will throw another option out there for you. If you want to deer and turkey hunt you could get a H&R ultra in 12 ga with the heavy barrel rifled barrel, then order a 10 ga turkey barrel for it. Two guns in one, and both excellent for what you want to do. The down side being the weight and it's a single shot. I own one though and like it.
Like I said there is nothing wrong with the Pardner gun, and they look really nice for the price. However I would suggest saving the money and getting a mossberg combo that comes with a bird barrel and rifled cantilever barrel. This set up would do anything you would want to do with a shotgun.
You don't need the magnum 3.5 inch loads to hunt turkey with either. They just extend your range a little bit and get a little more shot in the air depending on what loads you use. I would suggest before getting a 3.5 gun you shoot one, they can be pretty brutal on recoil. I have no desire to own one after shooting my buddies. The shells cost more as well.
Good luck,
Paul