That is a really great question. I'm on my second set of Bitubo's with the attached cartridge, I put them on my 08 SERK almost immediately as the 1.9" of travel is a joke. I ordered the 13" to replace the 12" which helped greatly. I have not had the pleasure of using another brand so I can't be of much help on the comparison, and I'm not one of those guys that will tell you that since I have them they are the best. I don't think you can go wrong with either, but I'm getting real tired of removing the bags to adjust the shocks for different loads. To get the most from your suspension it has to be set up for you and that is where Howard is helpful. I have a setting for adjusting pre-load, compression & dampening depending on the type of riding I will be doing. I do the same with my tires. It's time consuming but depending on how far you are going you will find your sweet spot and it will help you enjoy your ride.