I'm all for table selection, it's a great (and necessary) skill to have. Some just take it to the extreme though, and if you are grinding towards Supernova Elite you can't really be too picky (insert names of whining SNE chasers here)

You should keep some money on Stars too though and then have the option of table selecting across both sites. Maybe even just 10 buyins would suffice, though how you manage your bankroll is of course your personal choice. Plus like you say, when those deep games run on Stars they are usually good since it takes marks to even get them going. That way you can slip into those good games while they come and go and not be restricted in where you are able to game select.