If you are 200 pounds or less naked and can't out ride all your friends and most of their friends your stock suspension works pretty dang well. Proper tuning of the suspension you have (Most all current sportbikes) will serve you better than upgrading the suspension and not knowing how to tune it.
Look at suspenson this way: Let's say your stock suspension is like a $79 sterio from Costco with Bass-Treble-Balance. Three knobs to tune the unit. Anyone can tune it to sound about as good as it will ever get. Now let's say we buy Ohlins goodies and upgrade the suspension which will improve the bikes ability greatly but it's now like a Studio Sound system with 60 controls operated by the same guy with three knobs of experience. You move a few knobs and you are quickly lost. The same works with suspension.
Learn to use the simple basic stuff before spending a pile of $$ on something you can't operate anyway. Spend your excess $$ on the software (YOU) first. Spending $$ on suspension before upgrading the Software is putting the cart before the horse!
This is how the entire learning curve works. You go do your first track day and have the trackside vendor set your suspension baseline. You are thrilled with the feel and how your bike handles! Three track days later you have trimmed ten seconds off your lap times and your suspension is feeling a bit vague. You go back to the suspension vendor and he gives it a click or two here and there and it's a new bike and you are once again happy.
This senerio plays out over and over again as the lap times decrease first by big chunks and progressively comes down to one second intervals until your stock suspension has run out of adjustments in one or more areas. At this time, you have improved your software to the point your suspension has reached it's max and should be upgraded to keep up with the software (YOU).
IMO the software should always be upgraded first followed by suspension in a stairstep of events. Spend your money on improving your skills until you actually need an upgrade in suspension.
Same goes for brakes. If you aren't going to spend the time and effort to improve your braking skills and braking is a learned skill that not many riders excell at, it's a waste of cash on upgrading brake performance before improving the software that operates the lever.