not to hijack but could you expand a little more. i am looking at getting new sub(s) in the near future and both subs are on my list. any info would be great. I own an RL-p, so I have more experience with it based on that alone. It seems to have a good number of fans and a few people that have mixed emotions. I feel it is a strong sub that does not need gobs of power and has nice excursion and response all the way across the sub sonic range for my tastes, having a very thick presence to its sound. I do like the TC-9 motored drivers and the RL-p really seems to shine in low tuned ported boxes, in both output and SQ. The Q, in my experience was more of a smooth driver then the RL-p, kind of a more mellow sound. Very strong output in both ported and sealed. Seems to have a higher wattage limit then the RL-p, and has some customization from the build house. The Q seems to have a little crisper and lighter sound then the RL-p. I feel both have good strengths and it is a coin toss in the end. I think that 90% of the people out there will be very happy with either.