My experiences with Henry rifles pretty much echo those already described by 'cgriffin'. I'll add a few more of my observations, as well.
The successful rollout of Henry's new 'Cowboy", side-loading lever action, should be a good indicator that the company intends to market other models. Likely... in the so-called 'pistol' calibres... 38/357, 45 Colt, etc., in the not too distant future. With the demand for lever action rifles rising, as the sport of Cowboy Action shooting continues to grow; Henry Repeating Arms will want to position itself to take advantage of this trend.
I recently shot one of these rifles, chambered in .30-30. In my view, build quality is first rate. Certainly on par with the latest offerings, from Miroku-Winchester. Since I also own a Miroku-Winchester rifle, the side-to-side comparison: with regards to fit and finish...both internally and externally...was an eye opener. Henry builds very high quality rifles. At very reasonable cost, to the consumer.
Personally, I liked the ability to load/unload the rifle, through either the side loading gate, or loading tube. When unloading a partial magazine tube full of ammunition, for example: this made the process very simple and safe. As the action needn't be cycled to eject extra rounds. Simply pull out the tube and let the extra rounds slide out into your hand. Topping up the magazine tube through the loading gate, was easy as any Winchester or Marlin rifle.
As much as I like the Miroku-Winchester rifles....and I really like how smooth and slick they are to operate, right out of the box.... the Henry rifles are equally smooth. Plus: equally accurate.
I too, am looking forward to seeing a side loading gate Henry come on the market. Especially, in .38/357. I think one of these would be a fun rifle to own and enjoy.