Both ramps and lock shot should be done if your machine's set up right. Orbits are tough to backhand and requires a redirect at a wide angle. Avoid the urge. Ball control is the No. 1 priority.
The important one is the lock shot, and you should hit it from either side. Get your multi and let the saucer have it, and/or go for that super jackpot which you need to start Rule the Universe wizard mode.