I sold my fully paid version of Nuendo 4 for Reaper and am fully versed in the most popular DAWs and have tried them all.
There's no doubt which DAW is the most "PRO" for me!
Although I don't for one second think that any of the other DAWs are bad really any more, they are all pretty similar now it's just that reaper offers all the "details" i need plus the ability to grow with me.
It is also run by the loveliest guys on the planet!
and has a great forum to boot!
I have hung out at the steinberg forums a lot and I saw a massive amount of complaining about the DAW and being ignored by the devs.
good riddance to that!