the I doesnt really have any good points.. its expensive, discontinued, and jams easily
as for the II, the 6 paddle propellers offer fast speed, it's very similar to the cyclone feed system on the tippman a-5 - it will allow more than 1 ball to feed at a time; the door is more like a bowl shape making it easier to load, it has a lower profile
the bad parts is that it looks strange on a marker but then again looks dont matter too much in the heat of the game
as for the II, the 6 paddle propellers offer fast speed, it's very similar to the cyclone feed system on the tippman a-5 - it will allow more than 1 ball to feed at a time; the door is more like a bowl shape making it easier to load, it has a lower profile
the bad parts is that it looks strange on a marker but then again looks dont matter too much in the heat of the game