well, I can't recommend AC4... very unpleasant experience myself... and I may be one small voice out of many, many happy customers... but my experience with them was anything but .
and they'll not get a dime from me ever again.
Doesn't matter how low the price if the quality isn't there. The hassle factor in returning a defective refurbished unit ( if you happen to be the unlucky type), and dealing with delays for returned units/ purchases being credited to your account (they'll hold on to your $$, even if they send you 2 bricks, for at least 6-8 weeks), and you'll be on the hook for the original shipping charges regardless. Read their fine print. Then read it again before you order from them.
this is IMO, YMMV, and IFYDLIYCKMA,
mods, can we have a 'dislike' button ?