I'm looking to get a sub. I'm not an audiophile but do like to have good clean sounds, mostly for watching movies. If I have a choice to buy one of these used, which one should I buy? The Klipsch is a little cheaper but I'm ok paying a little more if the KEF is better. I can't seem to find too much info on the KEF AV1 since it's from the 90s so I would appreciate it hearing opinion from someone who's has experience with it in comparison with some new subs. Thanks in advance.