Pioneer SP-FS51-LR speakers good choice for me?

[PCFan]

In my bedroom I have a 32 inch LCD. I don't sit more than 5 ft away from the screen. Right now I have 2 Polk M10 bookshelf speakers but I'd like to have speakers that can give deeper bass. I have a subwoofer that came with my Yamaha speaker system that I'm not using right now because it's either: if I want to use the subwoofer I have to use the Yamaha satellite speakers placed on my TV stand or if I want to use my Polk bookshelf speakers placed on speaker stands then I can't use my subwoofer due to lack of space taken up by the speaker stands, so there are compromises being made in both configurations. This is in my parent's house in my bedroom which is already crowded thanks to a bed and a computer work area. If I want deeper bass it's either buy floor standing speakers or bigger bookshelf speakers or use my Yamaha satellite speakers with my Yamaha subwoofer. I was thinking about getting the Pioneer SP-FS51-LR floor standing speakers. How is the bass without a subwoofer? I'm basically looking for a 2.0 system that has deep enough bass not to need a subwoofer and is good for sitting 5 ft away.