Don't know if it's already been mentioned but save yourself some headache & avoid the crappy bag sets on eBay & many other sites.
Either stick with original Bubblebags (overpriced in my opinion) or go with Payload or Sprung. I've used Payload & they work great. If I had to buy a new set of bags though, I would go with Sprung.
And oh - YES it's worth it! It's a bit of work but with experience, it gets easier