Will good converters always be good converters? Or will today's RME be surpassed by a 100$ interface five years from now? The reason I ask, is I need a new interface, but was thinking on buying some nice Apogee converters instead, and then the cheapest interface with digital ins that I can find and maybe upgrade the interface when I've got the cash. Is this a good plan for the long term or will the Apogee end up being worthless down the road?