I have both Tix and T3 and am regret to inform you that Tix by far has NO match with the T3 in terms of picture quality (mainly on sharpness of images), may be due to the limitation of APS film. Nevertheless, as compared to my previous APS camera- Minolta Vectis 3000, Tix offers much richer color, better contrast and more precise on auto focus. I personally just don't think Tix really belongs to other groups of the Contax family as the APS does not match with the basic standards of the 35mm film.
So, if you just enjoy watching the 'grand' formats of prints (i.e. H and P formats) like I do, and do not want to spend a fortune on the camera like XPAN, and if the price is right (I paid $390 on eBay for a 100% new one a month ago)then you may considering getting one. Won't hurt.
But if you are fuss about picture quality (again, mainly on sharpness of images) and get mad and upset easily, then you should completely forget about Tix and APS. I believe other APS cameras, like Canon EOSix should perform not any better than the Tix. Other users please share your view, thanks.