airless sprayer help

Hi guys I just need some advice on an airless sprayer. I narrowed it down and i just need advice on what is the best and why. I will be using the sprayer for one house inside and out so I don't need a commercial grade. They all basically have the same specs but the titan has an auto piston oil hole. I realize some of the units are factory reconditioned but that is ok with me.
Any opinions will be greatly appreciated thanks

http://www.ebay.com/itm/Wagner-Twin...5?pt=Paint_Paint_Supplies&hash=item35c0759b21

http://www.ebay.com/itm/TITAN-XT290...4?pt=Paint_Paint_Supplies&hash=item2ec4d0a964

http://www.ebay.com/itm/New-TITAN-A...3?pt=Paint_Paint_Supplies&hash=item51a64fdeb9

http://www.ebay.com/itm/Graco-Magnu...7?pt=Paint_Paint_Supplies&hash=item2577362749

http://www.ebay.com/itm/Wagner-Spra...4?pt=Paint_Paint_Supplies&hash=item3cb795e2e2

http://www.ebay.com/itm/Wagner-Spra...0?pt=Paint_Paint_Supplies&hash=item3a7bbe519e

http://www.ebay.com/itm/Wagner-1700...5?pt=Paint_Paint_Supplies&hash=item27cd5c87c7