directional SMA antennas for RT-N16?

[Zangmonkey]

I've got two RT-N16's one is a bridge and the other is the AP.

I don't need an omnidirectional antenna on the AP because it is literally in the highest, farthest corner of the structure and a quarter-sphere signal would be perfect...

I'm looking for some antennas to replace the omnis on it.

Any recommendations?

I hear good and bad things about these:
http://www.amazon.com/Alfa-2-4HGz-Booster-High-Gain-Antenna/dp/B003ZWPS3O/ref=pd_cp_e_2

 

[mwarps]

http://www.l-com.com/category.aspx?ID=2073

pick and choose.