I liked MGSV: Ground Zero so which MGS should I play?

[rolltide101x]

I will pass on the Legacy Collection. lol
http://www.amazon.com/Metal-Gear-Solid-Collection-Playstation-3/dp/B00CTKHXFO

HD collection
http://www.amazon.com/Metal-Gear-Solid-Collection-Playstation-3/dp/B0050SX97I/ref=sr_1_sc_1?s=videogames&ie=UTF8&qid=1419010169&sr=1-1-spell&keywords=metal+gear+solid+hd+collectiob

So MGSIV or the HD Collection? It seems most of you think the HD collection?

I am not looking to spend that much money, as I already have quite a few games I have not finished.
Dragon Age, GTAV, FC4, The Evil WIthin, Pier Solar, AC:U (which I dont care for) hopefully all these will hold me until Bloodborne :D