if i create a new web application tomorrow, should i use Drupal 6 or 7?

i have never used drupal before so i have to start learning it first (very familiar with PHP) so i can understand the basics and how to extend it.

my concerns for using 7:

• no modules contributed yet? so i dont have all the fancy stuff i can add like in Drupal 6?
• no good documentation and lack of web tutorials? how could i learn about it if there is not that much support?
• too early in the development process? it's not stable enough?

i would like to use 7 cause i dont want to relearn everything and 7 is indeed just around the corner. but im afraid that it lacks all other stuff version 6 has.

could someone guide me into right direction?

thanks