Not tried the trinity brand ones but have run both the sanyo's and the gp's and to say the gp's are better is the understatement of the year..........there,s no comparison.
i don,t really understand it but on paper as you rightly say the sanyo,s appear to have a higher average voltage in practice it feels the complete opposite and as for run time well the gp,s have it too!!!!!
Sorry it seems like an advert for GP's but that,s my personel experience !!
only thing i have to be honest about is i,ve only run each set about 4 times so i couldn,t tell you if this proformace is going to keep up
charge @ 6 amps should see figures of about 4000mah going in
and anything around 3500 coming out @20 discharge (protrak charger used)
Take a look here if your UK www.tjcells.co.uk