lol seriously i don think "cubase" has a "better" audio engine, they said logic sounded better than any other DAWs. but seriously, wad the heck, if at the end of the day ur music sucks then it sucks really ,doesnt matter which DAW u use.
I have used sonar and cubase, and i still prefer my sonar in terms of audio editing, for cubase, theres slightly more things for the midi editting side, but i think sonar 7 has added some interesting feature to the midi editting (im using 6). But i have used sonar for a much longer time than i have used cubase, and i don use cubase as much (only in sch), so i can't comment much actually.
Both are ok, as long as the music gets out at the end of the day

.. one thing to take note is that, in SONAR, u can export everything out as once (individual raw tracks, or options to select, e.g with efx, with automation etc. or without).. you cant do this in cubase, u can only export one track out a time (correct me if i'm wrong), but at least theres fast bounce. unlike pro tools (which is a pain in the arse).
Get either and u wont be disappointed, u can try Cubase Studio 4 from resolution or get SONAR. If u have a mac, get the new logic studio (has alot great stuffs inside for a great price)!

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