Velodyne HGS12-repair or replace?

I’ve got two Velodyne HGS12’s. One recently stopped playing after having it sent out to an official Velodyne repair center after about 5-6 months ago. Warranty is like 90 days on the repair. 

I’m trying to determine if I should send it back out again or sell both and finally move on. 

If I were to move on what subs should I consider? Can I find new subs out there that don’t cost $1000 each but are very good? I like nice clean bass and have usually been a fan of sealed subs as it always felt tighter and cleaner. 

One dealer mentioned REL, but haven’t listened to the yet. I see a lot of great reviews of SVS. I have heard one JL Audio ( can’t remember model) but it ran about $1500 and sounded pretty damn good.