From which domain i can get better backlink .com or .org?

According to me from .com domain you can get better backlinks and also you can get huge traffic.

I agree with the page rank...the higher the better. BUT, if you have a backlink from an authority page within the niche market you are trying to increase your traffic for...then that is priceless. Search engines will send you more organic traffic just because of that and it helps to increase your page rank as well!

It's no matter about .com , .org it's about the PR and Alexa because when you backlink your website you should do it in website have high PR and low Alexa rank.

thank you guys for your great informative answers

by top 100 website of the world may be?

I would not agree with what people above say about .org backlinks. I never heard Google's Matt Cutts or any reputable SEO guru saying that getting a backlink from a .org is better than getting a backlink from a .com and I can confirm that by expirience.

Backlinks from .gov and .edu are a little better but do not spam too much your link to the comments of this kind of sites...

By the features of two kinds domains
Org give the better results

I agree with most if you work well and offer relevant comments the .org causally produces better results.

.org is recommended. But .com also gives visitors confidence about your website.

i will go with .com............

.org is recommended. But .com also gives visitors confidence about your website.

backlinks from high page rank blogs relevant to your niche. engage versus just random comments works the best. time consuming at first but well worth the effort.

When it comes to backlinks, .org and .edu are considered the best but not easy to get, The best option is to always look for backlinks relevant to your site contents.