Since this was the original posted question:

MrGamm first made made a very valid posting regarding searching the hack postings for several software options.

How you you actually pick from a listing the best overall secured option from a group with known security issues?

Suggestions were then posted for many of the same options listed, so...

1) I would think that you would want to mask your vulnerabilities as best as you can ?

2) With open or closed, each has an advantage and disadvantage. It doesn't mean that if you pay for a software and it distributed to you, that parts might not have open source programming ( as mentioned by MrGamm ) -- It also does not mean that it would be the best choice overall.

3) That said, here's a hypothetical open to the group:

Option A: Open source whatever software built with PHP with a mySQL back end.

or

Option B: Closed source managed and hosted, with neither of the above?

If both were similar in the operation, but Option B was better in performance, would the cost factor of Option B be your reason for not selecting it? ( obviously if the cost was reasonable )

Would you want to build your business, if you had an educated choice, as...