Steptronic is still an automatic tranny on the inside, just with a "manual" shift mode. It is not a manual tranny with an automatic shifter. Big difference if you know anything about trannys. A manual has an actual cog for each gear ratio, a real gear engaged with another real gear, whereas an auto uses planetary gear sets engaged by fluid clutch packs. An auto is connected to the crankshaft by the torque converter which is a fluid connection, instead of being mechanically connected via a clutch and pressure plate like the manual. A manual will always be better, unless you just don't like shifting gears. Using steptronic is no different than pulling any other automatic shifter down into 1 and manually pushing it up into 2, 3, then D when you want it to shift, which of course it only does if it feels like it, just like Steptronic.