keep them separate ...
i am still using linksys, but last week ordered new one , its still in transit.
it has most transmit power in that range, 500 mW.
http://www.amazon.com/TP-LINK-TL-WR1...p+link+1043+nd
http://www.tp-link.com/en/products/d...el=TL-WR1043ND
they changed the look after winning/getting/buying so many awards/reviews.
edit: i suggested this to my cousin too,
but if you want really powerful get the dual band router i.e. 2.4 and 5 ghz both in the same.
http://www.amazon.com/TP-LINK-TL-WDR...+link+wdr+4300