Cory,
I would suggest that you go for the 686. While K22s are great for training and plinking, ammo at reasonable prices are iffy. For me, in many instances, I can load a box of 38s (light load) for less than a 50 round box of 22s. You will shoot more, and be more proficient, when ammo is affordable and plentiful. While 44s may be more prevalent than 22s and 38s, it won't be as affordable. If you are planning on shooting, get the 686. If you are looking for something to collect, look at, and brag about, go for the 44. Think of the 686 and the K22 as trainers, the 44 not so much.
I would suggest that you go for the 686. While K22s are great for training and plinking, ammo at reasonable prices are iffy. For me, in many instances, I can load a box of 38s (light load) for less than a 50 round box of 22s. You will shoot more, and be more proficient, when ammo is affordable and plentiful. While 44s may be more prevalent than 22s and 38s, it won't be as affordable. If you are planning on shooting, get the 686. If you are looking for something to collect, look at, and brag about, go for the 44. Think of the 686 and the K22 as trainers, the 44 not so much.