I had one (and this specific brand of the scope) and a great scope it was! The only reason I passed it on was the weight of 11.3 kilos (with rings and dovetail), which along with the necessary tripod and mount (I used a Skytee II), meant that my 12" dob was a much better proposition for the faint fuzzies (said 12" dob weights 14 kilos + 12 kilos for the dob base).
Yes, it does perform better than your average run of the mill achromat but don't expect great results on solar system objects, although it does respond well to aggressive filtering. If you have used Cats / Reflectors / APOs on solar system objects, you will definitely notice the difference, although the views are passable. Since you mention chromatic aberration referencing a 4" f7 keep in mind that it doesn't scale the same to 6" f5.9, i.e. chromatic aberration will be worse.
For deep sky, this scope is a beauty. Objectively speaking, it does (and have tested is as such) give your average 8" dob a run for its money. You do get the beautiful refractor clean views and contrast and in a "manageable" - for some - package for a 6" refractor. It's also user collimatable (a useful feature) and has a beefy focuser that can handle everything you throw at it.
I passed it on to a friend who uses it on a Celestron AVX and it rides pretty well when it's properly balanced so if you want goto features, you get a pretty nifty combination with the AVX.
I will note something however. People at outreach events tend to relate more to refractors - it's a more familiar design. The TS 6" is one imposing / impressive scope