SVS Question?

[popcornninja]

I've had my sub for 5+ years, it's a Definitive Technology PF15. It has been a very good sub in my opinion and I've enjoyed it. I was just thinking of some day in the not too distant future of replacing it.

I hear good things about SVS Cylinder Subs. Would something like the 25-31PCi or PC12-NSD blow my current sub out of the water?

Thanks in advance for ideas and/or suggestions.