Building up my first home cinema with a mixture of components. System so far:
Panasonic ae500 projector
Toshiba sd220e soon to be replaced by a
Harman Kardon DVD 2550
Denon 3801 amp
Mission centre speaker
Front speakers Mordant Short ti25 - I think - 1980s Hifi speakers but they sound good
Surround speakers Wharfdale Diamonds.
What I am lacking is a subwoofer but my budget is practically spent

Would you recommend a cheap sub eg eltax thunder 8 from richer sounds, or is it better to wait for a few months and buy something more exotic and expensive? If so what? Can anyone point me in the direction of subwoofer reviews of the cheaper models?
Cheers,
Ian