I had some guild mates help me get Terokk's Quill as soon as I was high enough in level to get it. Never put an enchant on it though, because I was waiting for that elusive Sonic Spear to drop... well, fast forward 4 months later and here I am, still using my un-enchanted Terrok's Quill.
Legacy hasn't dropped for me either, and as a SV hunter, I never even considered the CWA, although I'm sure for BM, a decent argument can be made. Eventually, though, you'll see yourself replacing a lot of that AP with Agi (with some exceptions: S3 Axe, for example), for the same reasons that everyone above have stated.
Personally, I decided 3 weeks ago to get a 3v3 team together and scrounge together enough points for the
S3 Axe... at 1000 points, it's really, really a great weapon... and I never really liked PvP. Once I get my hands on that beauty, I'll slap a +35 Agi enchant on it and spit on Murmur's face for not giving up his Sonic Spear to me (although, I'll still run SLabs just so that one day I can say that I got it).