they both r great i like the cometa 22 they r very accurate out to 40yds from the yds i have hit ,the b28 if it comes from mike m then the b28.25 will be a excellent purchase if it hits at least 650 to 750fps im bought which the accuratcy will still be there ,i just traded a .25 shark with a new action and to tell u the thruth i should had kept it it was very accurate and it was 650fps on time powerful like shark in water it was co2 tank filled and a friend brake to go with it for a protuned b.30.22 thats also a great shooter my second chinese airrifle and im convinved between my b26.177 and the b30.22 im bought they r worth the money and stand with the best cause my b30.22 and 350m.22 r closely at being excellent accuratecy and power no problem just fps by a bit maybe 50 to 60 fps .the b28.25 should be an ultimate airrifle....jorge