Actually, the Basis 2000 or 2400 would be comparable to the Aries/Aries extended; and the 2100 and 2500 comparable to the TnT series.
For me, in my system, from the same dealer, the Basis 2000 with a OL Silver, was a clear choice over a Aries Extended/12.5. This is on a Apollo wall rack (with the VPI 12.5 and Rega WallyTractor and shure gage setting up both a Benz L2 or a Sumiko Celebration).
Better focus, much quieter! about the same size soundstage, but the Basis was a little taller - more solid players, with a "see around" quality, as oppossed to a "see through"; more palpable if you will. And the way the Basis does drums and drum kits (for you Tony Williams fans), both sound/dynamics/tonality, as well as soundstage size/localization, all against a silent backdrop,.......... talk about PRaT!.
Am I raving?; yea - just a wee-bit. I really love the Basis TT. Both are easy to set up, but the Basis is clean, clear, hugely dynamic,tracks anything, smooth, and neutral- like real music is for me. And like Harry, AJ really stands behind his products. Both are great if you have a question.
I am just itching to upgrade to a Vector tonearm. As well as maybe a Nueance shelf or 2? Anyone have experience with these and a Basis TT?