Im a huge easton advocate. Right now I am shooting lightspeeds. THey are basicly the same thing as a flatline, but a few .001 straighter and have a unibushing in the back. I really like them, as do I like any product I have shot from easton in the arrow department. Easton makes the strongest arrow on the market right now, which is the ST Axis.
I used to shoot gold tips but I alwasy had flight consistency between arrows. THey make eas arrow a little do broad for the spine and poundage. For example, one of they arrow sizes is a 5575.THe spine on this arrow covers to broad of a range, and isnt nearly as consistent in a 65lb bow as it is in a 55lb bow. I had decent luck with them in toughness, just not in consistency.
I havew shot the maximas by carbon express.. IMO you can take Carbon express arrows adn throw them in the trash. They have a real bad problem with inconsistent spines from the factory. If you get a dozen 250 spine arrows from them, there might be 6 that are within that tolerance. THe rest are everywhere else.
So I would recomend a easton product, you cant go wrong. They make the Epics which are cheaper, but still have a solid spine on them, and they are super durable.