The newest edition of the Companion Book is currently available in the Deluxe Edition, but it will shortly replace the original Pairs Companion at playpairs.com.
Heh, and I just printed myself up a copy too. Oh well! (I bought the older fruit deck rather than Deluxe because I like the art on those cards more.)
But if you're just looking for a good number of chips to set up with your Pairs game, I'd say 100 per player. I do this as 10 x 1c, 8 x 5c, and 2 x 25c. That's what I carry in my demo bag and it rarely lets me down.
This is exactly the sort of advice I was looking for. Thank you!