so im trying to decide between these four diffrent types i will be getting 2 15" i just dont know which ones what ones would u pick for SPL and some SQ and give reasons http://cgi.ebay.com/Cadence-Daytona-15-RVC...1QQcmdZViewItem https://ssl.perfora.net/www.ficaraudio.com/...view.shopscript http://www.soundsolutionsaudio.com/shop/in...p;productId=194 http://www.soundsplinter.com/rlp15_subwoof...nformation.html also considering these since they are on sale http://www.woofersetc.com/index.cfm?fuseac...Product_ID=5534 also can people post some links to some good amps that can power atleast 2000 watts rms