I will be mainly using it for Skype. I'm torn between an iSight from eBay or the aGent v5 HD. I'm looking for feedback on anyone who has used both or another suggestion that I should consider. I have read threads here on MR that the audio on the aGent is very poor. Is an old iSight still worth the $70ish for which they have been selling. I have been using the built-in webcam on my wifes HP laptop for Skype and I'd much rather be on my Mac! Thank you.