well unfortunately almost any ARF is going to need a bit of tweaking especially the wing and stab incidences. As tom stated there are other factors too. I got mine very close and am satisfied with it, others may be perfectionists and wont be happy if upon landing the plane they look at the control surfaces and find the ailerons p by 1/8" I have a friend like that who over engineers everything and most of the time ends adding a lot of weight to the model from his " Improvements " or down right destroying it and rendering it unflyable . I don't let him touch my planes if I can help it LOL

These Planes have the correct incidence built into the jigs but over time parts wear, drill bits dull and people tire, things can be off a tad. Either read up and learn how to remedy the situation yourself, Find someone who can help you or as you said go with another model brand and spend another $100 or more and fool your self into thinking that Manufacturer X has better Non-wearing parts, magic stay sharp drill bits and employees that never get tired