Why the good stuff?
My goal is to experience pu-erh in its entirity. Even with my limited experience I've noticed how variable pu-erh can be. "Indefinite character" seems to fit pu-erh very well. I think what really drives a tea drinker, and more so a pu-erh connoisseur, it that fundamental human curiosity to discover. There are so many teas, and so many pu-erhs on the market that it would certainly take a lifetime to experience even a small portion of what is available. Now why on earth would anyone want to waste time consuming a false or benign pu-erh which has little to offer? Counterfeit pu-erh is a reality, and I am thankful to have the few quality pu's that I do. Also, buying a cheap pu-erh for too much money can be a problem. Being informed is best tool.
So pu-erh gets better with age?
The most interesting spin on pu-erh it's aging factor. Both sheng's and shu's age well, though sheng's age longer and supposedly more noticeably.
I have tried eight year old shu, cha tou and small tuos, and find them all to be very smooth. Even a 2003 CNNP 7581 shu brick was incredibly gentle, having aged just five years. I have heard that every five years changes a pu-erh's character.
My sheng experience is limited to newer products. The oldest I've had is an '05 SFTM Banzhang mountain tea. It is good, but I believe aging will affect it significantly. Though aged tea is highly sought after, it is simply not affordable for every day tea drinking for the majority of the world's population. (It is said China's middle class is driving the pu-erh pu-erh market prices). In my opinion, buying young pu-erhs at a low price would make a great investment for the pu-erh drinker. Some esoteric folks feel that anything younger than 10 years old is sub-par. On a budget, this severely limits the ability to try younger, inexpensive types and the ability to start a collection of your own.
Young pu-erh can be consumed regularly if you don't want to age or collect it. It would be analogous to consuming a young red wine- it will taste very good, but just imagine the potential! My guess is one bottle of young red wine disappear faster than a 357 gram beeng for the same price.
Why are you hashing out the pu-erh "down-low"?
Pu-erh is a growing market- more so than ever! Some would say it's growing exponentially. There is some information available on pu-erh, usually vague or hidden on some forum from two years back. Or a background like on wickipedia or just little blips from sellers describing the tea as "earthy".
Pu-erh is getting more publicity and more awareness for many reasons. It is a health tonic (contains vitamins, minerals, polyphenols, xanthines) and tastes amazing to those who drink it. It is also a large part of ancient Chinese culture, and is in the midst of making a come back in to modern culture as of 2008. It is a healthy social event compared to alcohol, coffee, cigarettes or illicit materials. It also helps the body metabolize lipids (fats) and can be used as a detox drink.
So what really makes a good pu-erh?
If you can find a reliable pu-erh distributor and a well reviewed pu-erh, then choose something you can afford. Try both sheng and shu varieties to see which you prefer, unless you already know your preference. Analyze the tea (dry material, wet material and concoction) with your senses. Experiment with different brewing techniques and different water. Most of all, find out what works for you. These steps can help you obtain a good pu-erh which may yield the best possible results. Good pu-erh is subjective, so without too much more discussion I'm providing the following.
To quote from Puerh Tea Blog, while asking a seasoned tea head how to choose a tea...
"I no longer spent too much time on researching a tea.
If I find one I like and I can afford it, I will buy it.
After that, I would try to enjoy it as much as I could."