Are you trying to just sample or dig? The PT01 is portable, can be battery powered,has an external speaker,and headphone output. Perfect for your digging ventures.
I use the pt-01 for sampling and it works fine,actually when Dilla Dawg was completing the Donuts album at the hospital,he used the pt-01,plus it's very versatile,I'd get that if I was you.
well,get that first as you can take it with you on your digging trips or if you travelling and if you get the urge,save up for a good technics turntable or a set.