Since this is my first post let me tell you a little bit about myself. I am a Nationaly ranked judge with the BJCP, I have served and President and Vice-President of the local homebrew club in Tulsa, OK and have served as Organizer and Head Judge of its homebrew competition.
Okay, in a word YES you can make beer as good as anything you buy in the store. The harder beers are always the more delecate beers, Kolsh, Cream Ale, Dortmunder and the like, Pilsner included. But, any of them can be done if done right and most any of them can be done with exctract as long as it is fresh.
A good place to start is John Palmer's book, it is the one I refer people to now. To start out all-grain brewing go to
www.dennybrew.com. It was created by a gentlemen named Denny Conn. Wonderful brewer and tells you how to do it on the cheap and easy scale. Also, you can always send me an email I am glad to answer questions.
Saisons are probably my favorite beers, love them. Word of warning on the yeast it likes it warm 80+ is not a problem for it. But it has the possiblity to just stop short of what you want, or atlest it seems like it. It will take it to 60 - 65% attenuation and then slooooowwww down and I mean that. It is working just slowly. Some people have added the US-05 or 1056 to finish it off, but I have found that with time it will finish.
Again, if you have a question let me know.