[glogla]

It also depends where you're living - ferroconcrete apartment building is something else than drywall house.

Also 3x3 only gives you close to gigabit speed (realistically 700 mbps) when both ends are 3x3, and only very expensive and special workstation class laptops (including 15" MacBook Pros which belong in that category at least by pricing) are that.

2x2 laptop won't have better than 866 PHY speed in ac and that's realistically about 500 mbps single duplex.

Smart 4x4 device can use the extra streams for range - but that only ever works with original firmware, there's a lot of magic and patents involved.