Ahh so this is how you killed my site :)

I believe 7.3 is supposed to be the last stable "popular" release and thats actually what they are running at Liberty. I am using 8.0 at home and it works great, but I think the main "upgrade" between 7.3 and 8.0 was the Bluecurve UI. Nice UI, very Windows feeling, many of the traditionalists screamed. But 8.0 has been out for a while now good 6-9 months. Unless you have a reason not to go for it I would go with the latest version.