FWIW, I would forget PT, and just go for the BIAB/RealTrax double.
PT pales into insignificance.
You get your sequencing in Realtrax, with the added benefits of using REAL audio parts, chord recogniton , a similar chord entry window to BIAB and it goes on and on, OR "standard" sequence track views...and then add ALL that can be done with BIAB and it is a great combo. imo
If you can afford the extra, then it really is a no-brainer..BIAB+ReaTrax
Of course there is always the price of PT to consider...it IS really cheap
If it were a ONLY between PT and Mixcraft - then Mixcraft all the way!!
Dennis