It really depends a lot on what your buddy wants to do with the gun. Targets or hunting? Short range or long? Indoors or out? Shoots a lot or very little?
For me, paper punching in the basement, a little outside target shooting and occasional grouse hunting, I love my Beeman R7 in .177. But its really too light for grouse. I'm looking around for a hotter shooting .22 cal gun at the right price. When I was shopping some experienced air gunners recommended the BSA Supersport too. I was warned off the Chinese and most Spanish air rifles (Gamo and some cheaper Beeman and RWS guns) for erratic quality and often poor durability. This always starts an argument but I'm really pleased with the German made R7 - very fun to shoot and very accurate.