This is more out with the old and in with the older but I would be interested in your knowledgeable opinions.

I use a Velodyne SPL 1000 analogue sub for LFE on 5.1 movies. My 6k's are fully capable of dealing with the LFE but the sub was bought when I used to use a pair of Definitive Technology speakers in the last century, this along side Rotel amps, LaserDisc player and a Lexicon Processor. Oh how times have changed for the better.

However, I have been offered a DSW1500 Sub at a low cost which would make my system totally digital, but as the amp is 100W RMS, would it offer any benefit over the sound from the Velodyne?

DSP8000USE, DSP5200HC, DSP33, DSW1500, 808v5, 861v4, WiiM Pro+, Panasonic 55" Plasma, DMP-BDT700 Blu-ray,
MECOOL MEon1, Russ Andrews Signature Power Block, UltraFuses, SuperFuses, Kimber Signature PS Interfaces.
Prior: DSP7000.2, DSP6000.2, DSP5000.2, DSP5000.2HC, 508.24, 568.2, 596, G98DH & G68D.
Jaguar F-Type; Meridian 770W Surround System