Acoustic Research TA


Guys,
I have the above mentioned TT, its ok but.... I've got about $600-$700 maybe a tad more to spend. Should I consider a newer used table in this range, (Pro-ject, Rega, Music Hall ect.) or spend the money and upgrade what I have, or something else? What would give more bang for the buck.
Thanks
texron
Its operating great but I think the sound can be better, I've been thinking about sending it out for some mods.
Post removed 
Can someone recommend a great place to contact about doing mods on this? I've sent an email to Dave at Vinyl Nirvana, anyone else?
what do you all think of AE the Turntable? Dave at Vinyl Nirvana thinks I should upgrade to that.