Just had to share this. I have finally obtained, in my experience, to be the perfect 50 yard and under guns in .22 and .177 cal. So very accurate, light, and fun to shoot. Time to sell the guns that will not be shot much hereafter.
A bit of speculation going on here. Try this: take one to a dive shop and have them test it, and if you are adventurous, tested to failure. That should settle it and end all questions.
For overall versatility, accuracy, weight, and price point, I think the FX Dreamline (DreamTac) is the one. I would like to have said the BRK Atomic, but it is not easily modified as far as a caliber change goes.