I feel floorstanding will be better option than Bookshelves .. because they have more warm output even at lower volume..
Wat say ?
Well actually matching the subwoofer to floorstanders (esp multi driver 3 way ones) is quite difficult practically... unless you have a huge room with sound proofing / damping. bookshelves integrate much better.... this is just from my experience.... i know you are a basshead.... consider your room acoustics first..... if the bass is less you can add a second subwoofer or upgrade to a larger one....