I'm still but a babe in the audio world, so needless to say I'm still growing into and learning to operate the gear I've got...but like any good gear nerd, I like to plot and plan for the future. My current thoughts are to buy a 10 slot lunchbox and gradually start adding 500 series preamps (probably some by vintech and/or api but i'll leave that for another discussion). I like the idea of being able to upgrade slowly as I have the cash until I get to a point where I have enough preamps to ditch my mackie onyx 1620i and replace with a d/a converter like the lynx aurora or apogee symphony. Anyway, I'm just wondering how you guys like the 500 series format? or do you still find yourself going more for the traditional rack format?