1. I wouldn't need to hire an extra IT person. I already have very capable Linux admins. 2. Bad Windows sysadmins are less expensive than good Linux sysadmins.

1. I wouldn't need to hire an extra IT person. I already have very capable Linux admins. 2. Bad Windows sysadmins are less expensive than good Linux sysadmins. I agree with you there. Good Windows admins, however, are just as expensive. Trust me...I've hired quite a few. 3. Again, I have well-trained Linux guys on staff. 4. This is a very valid possibility we'll need to consider. 5. Not worried about that at all. We use a lot of open source without commercial support options, and our experience with Microsoft support is four hours of scripted troubleshooting on average, with about a 60% success rate of resolution. 6. Not concerned with this at all. Samba has been here for a long while and I don't think it's going anywhere.