If you need only an audio workstation to record real instruments, traditional rock pop bands and mixing and editing them, then go with ProTools.
If you like more to work with MIDI, VST instruments and composing songs and tracks - especially EDM music etc. and you wish also a serious audio workstation at the same time then I would recommand Cubase 6. It's awsome and my favourite DAW, but you need to study it a little bit in the beginning.
The time stretching algos in Cubase 6 are also unbeatable - they have been developed by Prosoniq (Timefactory).
For remixers and EDM producers Cubase 6 would be the best choice beside the more DJ orientated programms like Ableton and FL.
Instruments: AKAI S1100,EMU Ultra E6400,Kurzweil K2000,Korg WS EX,Roland S750,D550,JD990,MKS70,SH101,Waldorf Blofeld,Ensoniq SQ80.
Studio gear Lexicon 300,Eventide DSP4000,Lexicon MPX1,Roland SRV2000/330,RSP Intelliverb,T.C. D-two,Korg SDD2000,Electrix Warp Factory,MXR Phase 90,Edison EX1,T.C. Finalizer+, DBX166A,166XL,160,286A,Dualfex II,Mackie 1604VLZ pro,Mackie Control,RME AIO PCIe,UAD2 Solo,PC Intel Core i7 2600 4x3.40GHz,Steinberg Cubase 6.5,MOTU Midiexpress 128,Ultrasone Signature PRO