I think you do a very good job with your art. Peter is very simple in a great way. Then you incorporate other elements into everything around him showing good knowledge that you know how to use your programs tools.
Your comic is also very funny!
Here's my comic to check out tapastic.com/series/The-Preney-life
To answer the forum question:
I use Manga Studio 5 EX with a Wacom cintiq 12 wx. Manga Studio 5 is AWESOME! I no longer have to switch programs to get great results and do basic stuff like coloring (I use to have MS4debut and CS2...). The new tools in it are also much better than all my old programs combined! The tablet is cool, has a screen right on it. It's not HD and it's wired but it gets my artwork done