Hmm. Sorry if this isn't technical enough but if you are familiar with the sound of JL's Fathom line and already have the 113 I'd definitely spring for the Fathom 110 if it is within your budget. I'm all for having matching gear and from what I've read in misc forums specs aren't always the best indicator of how good a sub or any HT grear will sound. I don't remember the exact product line but SVS states that even though their BASH amps are below 500 watts the sound they got trounced subs having 1000 watt amps.

JD