While I can give you several specific pu-erh suggestions, the only way to find out what you will like for yourself is to order some samples or go with the ones you've tried before. Have you tried Adagio's Pu-erh Dante? If you like it, then you can definitely use it.
As for myself, if I were to put pu-erh into tea bags on the go, I would probably go for a slightly aged (2-5 years) raw inexpensive pu-erh.
Just as a side note, whichever kind of pu-erh you get, I recommend flushing the leaves in the teabag with hot water to rinse at least once. I feel apprehensive drinking unrised pu-erh, imho, because it might be a bit dusty due to time in open storage.