My band is trying to put together a nice system for when house sound is lacking subs. We just bought 2 peavey black widow 18 subs for a whopping $150

The cabs are in great shape but one woofer is on its way out. I'm looking at either a replacement black widow for $189 or possibly the peavey "lo rider" 18 for ten bucks more. its 800 watts rms vs 700 for the BW. we are pushing both with a crown 1400 amp. The lo rider goes down to 25hz vs 35 for the BW. Mainly do reggae shows so we need all the low end we can muster for this price range. We will run a wee bit of bass through them, kick drum, and any keys that need that kind of frequency.
Any experience with the longevity of either of these speakers? I like the price range, we cannot afford a 450 dollar EV at this point.
Any other woofers to look at in the $200 range?
Thanks for any input.