I have a great domain name in mind but it is already taken. Now .org or .info or some other extension is available. plz. suggest me Would I take that or not ?

It depends on what the name is your domain

i always go for .com then any other extensions.

well .com is the best extension to a website
many people still dont know that sites can exist with a .org or .info etc

Well, depends what u will be doing with the domain, developing or selling, or if you are selling services etc from a site then go with .biz

try to look out for alternatives ending with .com but not go with other extensions.

if .com is not available then try .info then .biz and then .org