Hi all, I'm currently a student looking to purchase a laptop. My biggest priority is school related things, but I also want something that can run music editing software (currently running Ableton Live) and basic video editing software as well. Also, I'm on the internet quite often (specifically forums, email, and ebay for the most part), so it needs to be rather quick for loading web pages. as well. I've narrowed it down to these three, two of which are "older" (2011's I think) upgraded MacBook Pros on eBay, the other being an HP Pavilion at BestBuy. I'm more of a guitarist than I am audio engineer/ computer technician, so I'm not very hip as to what to look for, what laptops are good or bad, etc. so I was hoping you wiser ones could help me. From a specs perspective it looks like the HP is the winner, but I've heard that the MBP is the best computer for basically everything, so I was looking for more opinions. Due to being a student, I am rather low on spending cash, so I'd rather not spend more than these. Please have a look at each and tell me which one looks best for my purposes: Thanks 
Apple MacBook Pro 15 4" Laptop 2010 2 4GHz i5 4GB 500GB Yosemite | eBay
Apple MacBook Pro 13 3 i5 MD313LL A 2 4GHz 8GB 250GB SSD DVD CD 49207 885909531653 | eBay
HP Pavilion 15.6" Laptop Intel Core i7 6GB Memory 750GB Hard Drive 15-p100dx - Best Buy
Apple MacBook Pro 15 4" Laptop 2010 2 4GHz i5 4GB 500GB Yosemite | eBay
Apple MacBook Pro 13 3 i5 MD313LL A 2 4GHz 8GB 250GB SSD DVD CD 49207 885909531653 | eBay
HP Pavilion 15.6" Laptop Intel Core i7 6GB Memory 750GB Hard Drive 15-p100dx - Best Buy