How do routers of varying price range differ from each other? What are differences in features, range covered etc
There are many differences, and they are significant in different ways. It's safe to say that the differences in chipsets (electronics) are largely not that important.
There is the obvious difference in networking protocols supported (version of WiFi, type of ADSL if relevant etc). These will make a big difference to speed and compatibility, but are pretty self evident.
The other big difference is the firmware (the router's "operating system"). This determines not only what the router can do, but the user interface - in other words, how easy the router is to use and what advanced features can be accessed. For details, you'd need to look at reviews.
Thanks. You did not mention regarding range of wi-fi coverage deciding differences between routers. Please elaborate with a weblink
There are so many factors that affect wireless range...
802.11a had a markedly shorter than other protocols, but this protocol is pretty much dead nowadays. MIMO (routers with multiple aerials, used primarily but not only with 802.11n) have better range within buildings than non-MIMO routers. Hi gain antennas can make a big difference, but can only be used with routers that have a suitable connection. Some routers are simply better than others in this respect...
However, the biggest difference is the terrain, and that's not something that can easily be classified, nor is it dependent on the router. If your environment has obstacles that block the radio signal (esp. metal, concrete or stone), then the signal will deteriorate regardless of the router. If the environment is "clean", the you can get a huge range even out of 802.11b (I remember reading a while ago about geeks who travel to far away places, set up WiFi stations and see how far they can get the signal received... they often get to tens of miles, sometimes to hundreds...).
This two article should guide you : http://www.tech2buzz.com/internet/how-to-select-a-wifi-router & http://www.digitaltrends.com/computing/wireless-router-buying-guide/
Our SOHO office uses NetGear router and we are very satisfied with it. Go for NetGear brand, price competitive and good ROI. Use this link to checkout : http://ntgr.co.in/home/default.aspx
Thanks. I have viewed all the three links. Please recommend a Wi-Fi router by purchase link , for efficient coverage of about 20 meters ( 15 to 20 meters ) of reputed brand but price not overtly high for current market price-ranges