I think the Air Hawk is the best gun you can buy at the price off the shelf in a department store. I mainly say this because it's a copy of a very good German made rifle, the RWS/Diana Model 34. What this means, is you can get the Air Hawk, and drop in a tune kit and have a very nice rifle for very little money. I've had one and it was very good after a little tinkering.
The Gamos, Stoegers, Crosmans and the other common "off the shelf" guns have little support as far as tuning parts go, and historically crappy triggers. The Air Hawk has a much better platform to start with, and a rather decent trigger. Not to mention its nearly all metal and wood.
Just my 2 cents!