I am making my clips mainly in PAL 720X576 but I see more often other formats in clubs, beamers 4:3 mixed with all sorts of widescreens. While there are different ways to cope with that, which format would be the most flexible for those adjustments. While editing material I am restricted by the original, in creating my own Flash,AF etc what would be sensible choice of size ? I am new to VJing, starting when the computers are fast enough and HDs huge, not to bother about anything under 720 576, what wide format would you suggest for my archives, clip creation. Wide for sure but what would be the most flexible, easy to adjust to those various projection sizes these days and assure it can still be usefull in few years.