Brake pads aren't like oil, there are real differences that even inexperienced riders can feel.
The Vesrah pads are worth the money in my opinion. I've tried a lot of different pads in the past including the EBC, PF, and CL. I'm sticking with the SRJL's over everything else I've tried; including the RJL's. Nothing else I've used can even come close to them. That's not to say that everyone will absolutely love them. Since braking is about feel not everyone will like the immense power that these pads offer. They have serious bite when you initially pull the lever. You can easily lift the rear wheel off the ground with one finger, but I love that.
The SRJL's last a long time too. I'm going through about two sets a year riding close to forty events so that's pretty good wear I would say. As a comparison I probably spend more on gas in one session of riding than I do on brake pads for a whole day of riding. I guess what I'm saying is that pads are a really cheap performance upgrade when you consider what they cost you per day to run. The only downside to the SRJL's are they are really dusty, and in the wet they lose that initial bite. They still work well but when the rotors are wet they lose that first big hit of stopping power.
I knew what I was looking for in brake pads after using HRC pads on a RC51 I had several years ago. When I got rid of that bike and bought a Suzuki I immediately started looking for a pad that would give me that same kind of feel. I'd try something for a weekend or two and then move on to something else. It didn't take too long until I tried the Vesrah SRJL's and from the first lap I knew I had found what I was looking for.
Brake pads are kind of like suspension in that you only know the best you have ridden. Since even expensive pads like the Vesrah's aren't really all that expensive relative to what it costs to do track days, I think everybody who is serious about riding and/or racing should try the SRJL's. I think that most people will really love them, but even if you don't you will come away knowing what serious braking power feels like and that should help you better understand what you are really looking for in brake feel.