My recent time spent with serious compacts has been a wholly positive one. So much so that I find my dSLR gear languishing in its bag gathering dust. I know there are many folks here that maintain both big clunky and compact kits - with some using their compacts simply as back-ups to their dSLR. So before I take the hasty jump to selling off all my big clunky and assorted paraphernalia and reinvesting in more compact gear I'd love to hear opinions as to why one does, or should, maintain their dSLR kit?....as there might just be something I am missing. I predicate this discussion with a focus on big sensor Serious Compacts. Not with the intention of degrading small sensor compacts, but more to steer folks away from the argument that you need a big camera to retain big sensor image quality. Also as a Sigma DP shooter who is a fan of the sneaker zoom, we can also premise the discussion with the fact that a serious compact does offer interchangeable lenses - just to put the versatility argument to one side. The only concession I will make is for shooters above 35mm - who can make a rather strong case for maintaining a big kit. I wouldn't expect a compact to approximate MF image quality....well not until Sigma releases their DP range with the SD1 sensor anyway So, again, folks, why maintain your big clunkies?