I do not have an opinion on Mongoose as of yet other than what I have read here. True, some of it has not been pleasant but I do applaud the honesty I have seen so far from them, especially on these forums.
The reason I am posting here is that, as someone who has recently decided to pick up the challenge of being a DM, I should be open-minded and see what else is out there other than the big name stuff. So, I have been researching most d20 companies, both fantasy and d20 Modern type books. I do not have a chance to go to a FLGS very often so all I can do is surf the web and check out the reviews here at good ol' ENWorld. So far, other than what seems to be cosmetic issues to me (keep in mind, I have not actually seen a book of theirs in me hands since Borders doesn't usually carry them (they are the closest book store to me at work and home)), the fact comes down to would their books interest me. So, far the OGL series seems quite tasty. So does some of Quint books, even if they are 3.0.
I am gonna continue researching all companies and find the best books for me. But like I said above, it is nice to see an company try so hard to make up for past errors. That counts in my book.
Nik