what ssd would be decent for my rig

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Feb 3, 2016
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i currently only have a 1tb hdd and i am in the market for a sdd to put my o-s and some other small apps so i dont really need lots of space i was looking in to buying a ssd from crucial on ebay its around 40 dollars for a 120 gb model is m500. i also found a Samsung ssd 840 pro 128 gb in mint condition for around 26 dollars currently on auction ends tomorrow would any of these 2 be decent i also found a adata on amazon for around 38 dollars i dont have alot of money at the moment so ive been looking around max space i need is 120-128 gb max budget is 50 if possible or any suggestions so i can save for a good one
 
Solution
Don't buy Second hand of Ebay or any other for that matter. They may say mint condition but you won't know till you install it.
Samsung are excellent SSDs. If its beyond your budget, save up and in the mean time cleanup your existing HDD.