I do understand folks that a better Tonearm than the AQ PT-7/8 would no doubt imporve performance. Since I'm already drilled for the AQ, that still does leave a few options.
Basically, the AQ Arm is not a bad one. I've probably read literal 100's of posts about this Arm, an as I've menetioned before, am running an original AQ Emerald Cable, which I believe was Silver Plated Copper, cost me $250 new, back in '97, and I've also recently added the Expressimo Counterweight from Elusive Disc.
Downsides to this arm besides the obvious Bearings, which are no doubt better in more expensive Arms, are the seeming lack of an internal wire Upgrade, and also lack of Azimuth Adjustment, but from what I can see, my Arm's Azimuth is essentially nuts on. (No I haven't done an testing with Meter, etc)
There are two improvement paths I see, that would no doubt help, and that is one, a SAMA, and two, a better Cable. Of course, jumping from the Glider, to the Lyra Helikon should be a substantial improvement, and these other tweaks I mention above should help the Helikon perform better.
Isolation of Motor Vibration should help any Cartridge, as well as my ole Glider. Mark