There are lot of domain names available in the market, so you can choose anyone. But, I would suggest you to go with .com, as it is very easy to remember and is the most frequently used domain name.You can also choose.net or .in as they are also popular ones among all these domain names.
According to Google, these are the Generic Top Level Domains (gTLDs) recommended if you want to compete worldwide.
.aero, .bi, .cat, .com, .coop, .edu, .gov, .info, .int, .jobs, .mil, .mobi, .museum, .name, .org, .pro, .tel, and .travel
Dot com and dot net are the most popular domain name zones and they are widely used by many webmasters all over the IT world.
And one more important thing is the price, different domain registrars provide different prices on them.
In SEO point of view and for good ranking of your website, order the .com extension. You can have .net extension too but .com is more preferable. You can order the .uk, .us, .in. .au, the country specific extensions.
I would always prefer .com as it is the top level domain extension for all search engines. Domains with .com extensions are easier to rank.
com is considered as a very popular domain name. It also helps in SEO rankings. I would always suggest a com
Dot net and dot com is the preferable one because it is easy to rank on search engines.
Very good domains for me in .COM, .NET, and regional .UA.
I would say it depends on your niche.
I'd still prefer com or net domains.