want to buy new domain. pleas help

the domain i was looking for is available only in .US and .Biz

exact searches in google adword keyword tool: 27000 local US
exact key phrase with quotes showing 34400 results
allintitle: results 15600
allinurl: results 5860

should i buy this domain? i don't know how to calculate compitition. pleas help and suggest me what to do.

Look at the sites that are ranking in the top 5 now. Is there on page SEO optimized? Do they have thousands of back links in Yahoo? That tells you how hard it will be to beat them. Also if they are Exact Match Domains like "keyword.com" it will be much more difficult.

thanks for your reply, ivictus

OMG. yahoo is on 5 position. 3rd ranked site have 1350000 back links in yahoo.

another exact domain is available in all TLDs except of .com

google adword keyword searches exact: 14800
exact search in google with qoutes: 90000
allintitle: 1570
allinurl: 1130
backlink for top 6 ranked sites : not more than 1k.
exact matched domain "keyword.com" on 8th position. with 90 back links and 2 indexed pages.

can any one pleas suggest me what to do? should i buy this domain or not?

Check your competition with somethin like Traffic Travis or other software and see of its worth it.