I used to collect cards. My wife hated the hobby . I ended up selling the whole collection on Ebay . Had alot of game used and auto's that I loved. Yes the 2nd would be my choice also.
I Have a bunch of Juliu s cards as well. I have the Prime Sigs card (the top one you listed) #1 as well as some other very sweet JJ autos. My Favorite card of his is a Upper Deck SP Authentic auto with a 6 clolor game used patch. It is an awesome julius card. If knew how to post scans into threads I would put soem pics on. Both of the ones you are looking at are sweet, but i would take the Prime Sigs one and look for the Hot prospects JJ with A multi colored patch. Either way you cant go wrong. I also have 2 of the SPx JJ cards with the auto and a piece of game used football and Jersey. They are both numbered out of 25 and are very sweet cards. These JJ cards you are looking at are some of the most (if not the most) sought after cards in the industry right now. You should definitely buy any JJ cards you can get right now (especially limited run autos).