I haven't used their gels myself, but if a pro product isn't working as intended it's usually due to your application, and switching brand may not help, have you tried contacting them regarding your trouble with their products?
If you want to give another brand a go, there are plenty out there, most also have little trial kits you can try out, for example I bought the NSI Secrets Soak Off Gel trial kit, but haven't tried it yet.
Usually product preference just comes down to personal preference. If it's cost effective you're after Gellux or ibd hard gels might be something to look into. Again I'm not familiar with these gels though.
However, if you are switching completely you will also have to factor in the required lamp for the new system, and potentially retraining in the new system.