Hey, Dominic, welcome aboard. Figured I'd put in my 2 cents worth, as well. I tend to agree with Gene, the 440 is probably the best deal going right now. The scopes that come with the Gamo rifles are okay, but for the money, you can usually do better on your own. Seems they all come with 32 mm objectives, and for me, that really limits their usefullness. How do you plan on using an air rifle? That's usually everyones first question. If your primary use is going to be hunting birds and squirrels, I'd probably go with the 440, just because there's less fiddling around with loading, and a quick follow-up shot is easier. However, shot placement is vital, and watch the range. For slightly bigger game, consider the CFX .22 from Pyramyd Air. Probably out of your budget, but a great rifle. Unfortunately, you won't find a refurb in .22
One very important consideration if you're new to springers, I'm sure you've read about it, is hold sensitivity. The CFX is probably one of the most forgiving rifles available in this regard. My first rifle was a .177 CFX, I just got one in .22. I'm selling off the rest of my springers, one of which was a Beeman HW 77. Do some research on that rifle, and you'll know my opinion of the CFX :-)! About the only thing you need to make a good CFX a great one is a Charlie Da Tuna trigger. Yeah, tunes are nice, but that can wait, with Bob's trigger and some practice on your part, the CFX is quite capable of regular 1/2" groups at 30 yards, even better with some tweaking. The more I think about it, the more I'd say CFX for a newbie, even the refurbs. The last one I heard about, the guy said he couldn't find a mark on it, looked and felt brand new. Guess I'll quit running off at the keyboard, good luck and keep us posted on your choice.
Dave