Which Modem Is Best? i think to buy wireless modem which is the best one, can any one prefer me

Welcome to eTI community, your query has been approved.

Hi, Johnwilliam welcome to eTI,
Now regarding to your question, can you make it easier for me to help you out by specifying the particular modem which you want to buy.
Is it going to be a WI-FI or 2G modem or 3G modem or router ?

I think d-link is the best wireless modem to purchase....

D-Link, Belkin, Cisco and TP-link are the one's that I prefer when you buy one keep in mind the use and the number of devices that you will access using the same.
You have these brands providing you a variety from Wi-fi to 3g, different internet families and a lot many differences in the configurations. It also depends on the speed of the internet that your ISP has so you can count on them.