Old TF fan, but new to TF comics: where to start?

I'm a 36-year-old TF fan. I've never read ANY of the TF comics, but I'd like to try some. Where's a good place to start? And please bear in mind two things:
I'd like to read some comics that are easy to obtain; I don't want to have to visit every comic store in the tri-state area to track down back issues.
As an adult, I'm not interested in comics that were written for kids; I'd like something that's "grown-up".
How about The IDW Collection Volume 1? (I only mention this one because it's available on Amazon: http://www.amazon.com/Transformers-IDW- ... 964&sr=1-3)
Or what about Transformers Classics Volume 1 TP? (Again, I ask because it's available on Amazon: http://www.amazon.com/Transformers-Clas ... 964&sr=1-4)
I'd like to read some comics that are easy to obtain; I don't want to have to visit every comic store in the tri-state area to track down back issues.
As an adult, I'm not interested in comics that were written for kids; I'd like something that's "grown-up".
How about The IDW Collection Volume 1? (I only mention this one because it's available on Amazon: http://www.amazon.com/Transformers-IDW- ... 964&sr=1-3)
Or what about Transformers Classics Volume 1 TP? (Again, I ask because it's available on Amazon: http://www.amazon.com/Transformers-Clas ... 964&sr=1-4)