...but I think I'll be sticking with Thea for now. For me, Phoebe is just not good enough but I'm sure that it will come in handy for others.
Of course, you're welcome to stick with Thea. If it works for you, that's all you need. However, it seems a bit premature to dismiss the quality of the new ray tracer. How long did you spend learning the ins and outs of Thea? How long have you spent with Chief X3?