For general plinking much difference between these two
Same round, different packaging.
The 50 round boxes are what I bought.
Besides general plinking, a lot of folks use this round for low cost target practice and save the expensive ammo for matches.
For general plinking, shooting at steel or anything that does not require much precision bulk pack ammo might even suit your needs. But I feel you pretty much can not go wrong with CCI SV.
Kind of ironic, me telling you that bulk pack might possibly work for you... my only recent regret buying ammo was buying bulk pack for general plinking and not just buying more CCI SV instead.
Jerry