just got the benjamin titan np .22 and need pellet advice

I would start with a round nose, diablo, pellet of standard weight 14.3 gr. My RWS springer likes crosmans but most here like JSB. Wad cutters are for paper punching at closer ranges. This site has a nice search feature. You might find other suggestions using it. You could also try one of the variety (sample) packs that have 5 or more of a particular brand. http://www.amazon.com/gp/product//B00840H2CM/ref=twister_dp_update?ie=UTF8&psc=1