It would depend on the price, the size and if it's cheaper than anything in store. Generally I wouldn't spend any more than $25 on any digital copy that you can't lend or sell or possibly even play 10 years down the road. On principle alone though it's way better to cut out the middle man than support a box store like Walmart. Since there's no middle man, there's no markups, no distribution, no pollution released in the air from an idling shipment truck etc Sony & the developers should see more profits so win-win.
Picking a game out & having it downloaded by the next day(and not paying tax) is tempting. Who knows, though. Current gen I have to either love a game or I don't bother with it. Next gen I may love so much I'll want physical copies of everything.
sig by Grindhead_Jim
I will probably go all digital. I do now with my PS3. I don't care about resale or such. The disc versions of my games are just sitting there collecting dust and taking space. I hate having to look for my games or worry about scratches. With the excpection of Dragons Dogma (Since that isn't sold digitally) I haven't purchased a disc-based game since Novemeber of last year! And I'm completely satisfied with it.
I won't go digital because of the dinky hard drive that it comes with. I will probably put the biggest hard drive I can in my PS4 day 1. That's also the only reason I refuse to buy the xbox one, a small 500gb hard drive that can't be changed.