You really need to go and play a few to get an idea of what you want. Im a Precision man through and through and however much I'd love a 50's or 60's P bass I know that the flat wide necks would just not suit my sausage fingers so they're immediately out of the equation. Ive got two 70's Precisions that fit the bill perfectly for me, neck, weight, colour, feel etc but its taken many to get to this stage.