thinking of buying cheap wifi modem+router & dongle for bsnl.

fone moved to next room & it's now 1 wall apart.

how is the performance of these two ? just because i want it to keep as cheap as possible, without having any disconnection/ lag issues.....

TP-Link 150 Mbps Wireless N ADSL Router (TD-W8901N) &
TP-LINK 150 Mbps TL-WN721N Wireless N