why not kick a few tires
it sounds like you are ready to progress, but why limit yourself to a specific species, why not look at all chams on the market (of the types you are interested in) and buy the nicest one you can find (and afford) at the time, if that happens to be a jacksons, then so be it, but even if you wanted a jacksons, wouldnt it be better to have a prize ambilobe, than a run of the mill jacksons, (and vice-versa)? jmo / if i get any more chams i think i will look at ankaramy as my first choice, cf member todnedo had the most exquisite ank recently but i was not yet ready to make the move.