So ive been looking around and i really like the 500 series plus there lower on cost. lol ive tried finding some info on these but havent found much. can anyone on here lead me to some info or tell me about this series? i dont have the money for a digital back yet but i would like to do some more balck and whites. ive been looking on ebay for one and some on there are starting pretty low to, any ideas or thoughts about this? good or bad with going on ebay? let me know cause im easger to purchase one!