This can be a very useful question. We end up finding that home recording studio owners put many their attention into stuff that don't really make everything a impact on their recording.
In particular, it's very unlikely that your available choice of analog-to-digital convertor will make any difference whatsoever for the marketability of your task, or whether a listener wants it or not.
Similarly, although your available choice of microphone preamplifier will complete a subtle impact on your sound it would be highly unusual for any success or failure of a project to be based upon preamp choice.
In regards to microphones there is even more of a positive change, and not as much as with microphone positioning, that will make significantly more difference than which microphone you use.