There's been a new great bot arround with thousands of free made scripts by their scripters. This bot works great for begginers as it is very easy to add scripts and the community is great too. This bot hasn't ever been down yet not of that I know of but I use this bot nearly all the time. Most scripts on this bot is free and are as good as the Paid scripts of RSbot.
I dislike the closed nature of RSBuddy. It appears it has no real advantage (apart from the odd script or two which are better written) over powerbot/RSBot, but with the insecurities of a program you cannot scrutinize thoroughly.