How to Choose a Best SEM Company?

[Maxwell]

Any one can show me reasons to choose a best SEM company ?
I often check factors like
- Their services that they are offering
- See the Contract in Advance
- check their own Site is Ranking
- their price
according to you, which is important factors to choose a best SEM company ?
please share...

 

[HostNurse]

If I have to choose, then I would choose according to the quality of their services. But, all factors are important. Also, I would add to your factors:

- The reputation and honesty of the company.