Good and reliable is Prince Syn Gut Duraflex. Resists notching as well as a syn gut can as the cross. Better spin & longevity than multi crosses, softer feel than poly crosses.
Head Pro Tour 280/630 MP, 18x20. Tour Bite 1.15/Mosquito Bite 1.16.
Sampras serve, Agassi backhand and Federer forehand. heh heh