Playing a fonewearl as main char, I go for Ra techs all the way from normal to vhard. In Ult, however, when techs are my only way to do damage in Ruins, I have to rather switch to Gi techs as Ra ones are too slow. Rabarta is good for casting from the neighbouring room safely, but as stopping Gran Sorcerers is concerned Gibarta is a lot more reliable as, being twice as fast, you have twice as many tries to freeze them before they Grants-kill one of your teammates (perhaps you). Best way for entering a room in ruins is casting Gifoie before entering and moving along inside the ring while monsters spawn, then as soon as you hear the spawn cast another Gifoie and move to safety, then use the most apropiate tech for the group... I know my techs are little more than distractors while the real damage dealers get the job done and I'd be more useful just using rabarta compulsively, but time ago I gave up in trying to be "useful" in ruins and decided I'd just have fun, and compulsive gifoie is fun.
