betaine pellets....everything protein based has betaine in it - so most pellets have betaine in!
to be honest, i dont really think 1 pellet is better than another. if everyones on, say, halibuts then try elipse. be a bit different. i prefer blends. at the moment i use a blend of:
hinders pellet combo (contains elipse,betaine, and trouties?), halibut 14mm, dynamite baits koi 6mm and 2mm. lots of different sizes, tastes and importantly dissolve rates.
i like elip's over silt and heavy weed as they are quite oily so a: sink slower and b: give off a better slick.
fishing hinders "winstone" mix over pellet can be good-especially with a 14mm halibut or 10mm boilie. try it as method, or dry powder in pva bags.
hope it helps. i'll try and show a bit in the write up for the "improver" trip i'm doing on sunday.......