Hi, I'm a court reporter from Puerto Rico. I go around lawyers offices and record depositions mostly. I'm looking to replace my standard cassetts recording system with a laptop plus an interface unit that can record a minimum of 4 diferent channels but would like to be capable of expanding to 6 when needed, looking at the Tascam USB 144 at this time. Need also advice on microphones, the idea is to have one recording everything (think you guys call this omni-directional), and the others focused one in each particular person (uni-directional?), that is mostly to deal with interruptions, listen to a particular channel to block the rest, the mics need only to do the job well, just record voices, quality is not a big issue here. I have to tell you guys that I have no idea on what I'm getting into, I figure people like you that know the equipment are in a good position to point me in the right direction once my needs are understood. Thanks in advance and please excuse my English.