Q: Antenna combination

[KOA]

which one is better for a Link upto 73meters.

2X 2.4GHz 6dBi Indoor Directional Antenna
TL-ANT2406A
http://www.tp-link.us/products/details/?model=TL-ANT2406A#spec


Or

1X 2.4GHz 9dBi Directional Antenna
TL-ANT2409A

http://www.tp-link.us/products/details/?model=TL-ANT2406A#spec


or

will a
2.4GHz 8dBi Indoor Omni-directional Antenna
TL-ANT2408CL http://www.tp-link.us/products/details/?categoryid=2473&model=TL-ANT2408CL#spec

+ 2.4GHz 6dBi Indoor Directional Antenna
TL-ANT2406A
http://www.tp-link.us/products/details/?model=TL-ANT2406A#spec


will work ?


Currently I'm using

2.4GHz 6dBi Indoor Directional Antenna
TL-ANT2406A
http://www.tp-link.us/products/details/?model=TL-ANT2406A#spec

+ Default 5dbi antenna
Signal strength ~40% as mentioned in Gargoyle.

Tp-link 741ND on both ends.

Also firmware should be used for this link ? gargoyle doesn't have things like ACK timing etc.


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