I'd get the Winchester Trapper in .30-30.
1. The model 94 was made for the longer .30-30 cartridge. Some folks have had trouble with the pistol rounds in the 94, but Winchester keeps on making it in pistol rounds, so the trouble might not be as bad as it seems, or they're just too stubborn to bring back the model 92. You might not have a lick of trouble with the .44, but why go through all that time, money and aggravation?
2. As someone else suggested, the .30-30 will give you longer range.
3. Marlin has had trouble with their 1894 in 44 mag. For some reason this caliber has really given them headaches with feeding and accuracy. If you go on the Marlin talk forum, this is not a new problem. I got rid of mine because at first it wouldn't feed, and once that problem was fixed, it shot all over the target at 25 yards. No matter what ammo I used, it still ended up looking like I fired a shotgun at the target.
4. If you're really sold on the .44 mag., go with the Winchester 92 if you can find one (especially in a 16"--good luck!), or (best bet) a Puma 92 clone in .44 mag. You can get these with a short barrel I think. Your 16" barrel length is really gonna limit you on choices.
Like Graybeard said, Marlin is comming out with a .480 and .454, but I doubt they will have the barrel length you're looking for (But boy-hidey, they'd sure be great on hogs at close range!)
:cb2: