>>2839440
Peterson has two lines of 'System' pipes. The Standard and Deluxe systems. Personally I actually prefer the standards because they use traditional stems, whereas the deluxe uses what they call the 'p-lip' stem which directs the smoke upwards towards the roof of your mouth to supposedly prevent tongue bite. I have a deluxe with this stem and it's not bad, but it's not my personal preference.
Cleaning them involves an extra step over a normal pipe but it's really pretty quick. Just remove the stem and swab out the moisture chamber with a twisted up tissue/fluffy pipe cleaner/whatever you prefer.