Originally Posted by JohnMW
I'm not a bass junkie like some, I'll take properly set up, accurate bass over sheer quantity that clouds the rest of the detail in the mix.
Your above succeeds in showing all who know, you're a closeted bass junkie. First things first, the best subwoofer in the world will have the detail of it's output clouded by poor placement due to it's output being destroyed by a room's acoustics. The point, quantity does not cloud the detail of the mix but, agreeing with you, poor placement will.
Based on that, my first question to your first posted comment: do you have room measuring capability? The poignancy of the question, if one can't measure and properly place their subwoofer reproduction system, then they'll have absolutely zero chance of obtaining what you're wanting out of your subwoofer sound reproduction system. With a freeware copy of REW (pain to learn/easy to use) and a sound meter that has a mic out, one can easily set up and measure their room's acoustical response to their subwoofer system's output. In the simple, without room measuring capability, there is no hope.
Anyway, I have an opportunity to get a Tannoy TS-10 or Mission M3AS for around £50, but I'm not sure if either will be any more capable than 2 PDR 10's. The Tannoy is sealed and seemed to get good reviews when it was released, I'm sure this would offer tighter bass but am I replacing old for old and would be better off waiting and getting a BK Gemini or XLS200 after Xmas. (Budget is an issue at the moment while the missus is on maternity leave!)
Just saying, based on your above comments, you've set the bar mighty high and with great expectations will come major disappointments. Of the two subwoofers you mentioned, based on specifications I found online, I'd go with the Tannoy TS-10 due to it having a 300w amp and 29Hz depth of output vs that of the Mission subwoofer and hopefully you'll couple this subwoofer with a freeware download of REW so you can see and "properly set-up" your subwoofer sound reproductions system.
Wishing you well with all the future has to offer.