I've used a P3 for a few years now, having gone through all the usual Centuries, Zippies etc, and for rough ground it's the rod for me. The P3 is pretty slim (got a 26mm reel seat on mine, with tape underneath) - the Q3 is slimmer, lighter and more through-actioned. Bite detection is spot on - ok, not on a par with those match-type rods, but then that's not what it get's used for, but a rattle from a small pouting at range will still show up nicely and of course a good codling bite will show up on just about any rod. The thing I like about them is that they combine the rugged feel of Century rods (which I like, but tend to find a little "numb") with the "feel" of a Zippie in the cast - you never seem to lose touch with the lead & I find them much nicer to cast than a Century. Not overly heavy either for a rough-grounder - fully built with reel seat & some extra grip tape & such mine weighs in at 1004g. Pulled in a 46lb lump of weed in a big sea off the back of Beadnell point (yes, I weighed it!) and has coped admirably with any fish I've managed to catch.
Gary