Your weight and ride style are considerations.
Some benefits from my work.
One: after market, stiffer, linear springs got me less laiden sag (now close to recommended ideal).
This gave noticebly more lean angle before scrapage. A very good thing.
Two: Balacing the sag for front and back planted the front during agressive riding.
Before the front felt like it wanted to float in "going in too hot" hard turns (esp. 2-up)
Three: '03 had the softest oe front rate. When I grabbed a hand full of panic brake,
It made my neck snap as it dove. My compression was one click off max.
That disappeared with aftermarket springs, and now my clickers are closer to the middle.
New fork oil may of had something to do with this.
Four: Bridge expansion joints are now more jarring than before. After market valves would probably help that.
I just upgraded my springs.
Here is a fabulous link from earlier threads. A must read for anyone about to change their own fork oil.
If it is not in our bin of facts it should be:
fork oils
I chose SPECTRO 10W and am happy.
In short I spent ~$120 on springs and oil and changed the bike in the front, plus $550 for a used Ohlins in the rear.
The result was waaaaay more confidence exactly when I need it most.
If you feel like you need a more confident feel you are a great candidant for suspension work.
If the bottom of your peg is round and pretty, maybe the need is not there. Get familiar with how to adjust what you have.
If you just got an FJR and want to keep up with the Jones, you might consider spending the money on several weekend trips to great locations.
The only person that cares about your suspension is you.
Footnote: I have a superbrace but have never felt the love for it that others have.
New springs and oil made 15 times more difference for me.