So it's been almost a year with BASIS. It really is next level. During most of the time I was also running Cissus XT.
When I added BASIS, I like many noticed the improved joint support. I kept the cissus in. A couple months ago as an experiment I pulled out the cissus. It took over a month to notice, but I am now noticing a slight difference.
If you are running BASIS and Cissus, I recommend you leave the cissus in. BASIS is amazing for joints, but the added cissus helps cover other bases. I'm very excited for the Cissus XT restock!