I formerly used a steep time of 3-4 minutes, but now let it steep for 5 minutes. Much prefer it this way. PG Tips is not going to get me as a customer!
I just got back from the grocery store. After unloading my cart/buggy/trolley I thought of this thread and just left it in the middle of the parking lot.nnnn
I, too, own only one. I like it a lot and it smokes great. Seeing this thread reminded me that there was a handsome Kai at a good price on a Danish site that I've had my eye on. Went there and it was sold!!
The European vendors are the best source for 9 mm pipes. Besides the Danish Pipe Shop you might look at Haddocks Pipe Shop (dutch) and Cigarworld.de (German). Both have many filter pipes.