Hi there, I own a large forum site (the largest in our industry at least). We have a 21gb database with 1.2 million threads and 15 million posts. We're pushing around 11 million page views monthly and operate off separate web and db vms. We are currently running a largely stock vBulletin 4.x with Sphinx search and relatively few plugins and products. I have a few questions and concerns prior to purchasing about the viability of switching our site over. Are there server intensive features that are recommended to be disabled for large boards? Import of a large board - I see there are multiple options including third party paid offerings and ssh import instead of the browser. How long can I reasonably expect an import to take? Paid memberships: We use a paid subscription model with access to premium content and for sale forums. Currently we use authorize.net and paypal, I see native paypal support within the control panel for user upgrades, is there an authorize.net option?