Forum talk:Neekerivittu/@comment-7633726-20130717062237/@comment-6170572-20130719073702

The difference between BT and BotRK comes down to the active: if you remember to use it, and can use it effectively BotRK is better. But if you have sticky fingers during combos, hate active items, or like to play more as a caster than a duelist go for BT.

Also note that BotRK is better for pushing and tower-killing.

Other than that, he's not too difficult to learn. There is a massive skill ceiling though, so you can always go up.