I use Robotz In Disguise. 10 premium bots, 2 free bots. Easily lowest banrate, and the only bugs I've had recently were either having updates being worked on, or just from randoms that haven't been solved yet. The bot just logs out instead of spazzing around, so it's not anything to worry about.
Features:
Uses AI programming methods for the bot's decision making processes
Autotalker
Black-box security (means Jagex can't analyze the code to implement detection systems)
Unique styles (means every person's bot is one in a billion possible combinations for their bot's behavior and habits styles. Means even if Jagex ran RiD's bots for 10,000 hours, their bot would behave differently than all the others)
Human, not just human-like, mouse movements, available in Gaming Mouse, Infrared Mouse, and Touchpad (like a laptop).
All but 6 skills can be trained to 99 with RiD.
Universal credit - buying credit is kind of like a pay as you go cell service, where you buy credit, and you can use it on any of the 12 bots whenever you want until you use up all the credits. So 7.99$ to bot ~100 hours on any of 10 premium bots? Doesn't seem like that bad deal to me.
Can be minimized using a Virtual Machine for free using a guide in the site's knowledgebase.
0 bans since 2008 following Guidelines, and under 40 bans since 2008 of people breaking Guidelines (of those 37, almost of them were botting more than 18 hours a day for weeks to months)
Personally, I've botted 2450 hours with RiD, and I've never had a single offense. I've botted 9 99's and over 2k total lvl. I'll have maxed my Account with RiD with the remaining credits I have left (not counting new bots).
We have many users who have achieved 15+ 99's with RiD on a single account. One of our veteran botters is actually about to get his Max cape soon. It's pretty much where people go to max their account without an offense.
