I sell dog carriers... so I am glad to give my opinion
My current favorite carrier is the Jaraden.. here is a link that I posted a week or so ago.
http://www.yorkietalk.com/forums/yor...t-carrier.html
I would say your could either
a.) get a simple inexpensive bag to use until your pup is grown
b.) or get the best you can afford but larger then you need because your pup will grown into it.
research the features you want... think of how and when you are going to use it.. that shuld help you choose.
good luck shopping
Shinja