An iPad is my device choice, but will be exceeding your budget
The iPhone works for typed notes
>stylus
A stylus is an improvement over using your finger
A cheap capacitive stylus (big mesh tip) can be used on both devices. I buy them in multi packs
The Apple Pencil (expensive, iPad only) is the best stylus for handwriting and sketching
>would I still useNotability or is there another app
Evernote has a handwriting/sketch feature,
but I prefer the Notability app for handwriting. No automatic sync, but easy to save notes to Evernote