Hi JC over the years I've tried most of the main brands and I have revisited the Java Green, I think they might be a bit brighter as they run a little softer than other cuts and the heart/spine doesn't extend as far down to the reed tip. I've been looking at my box of used/dead reeds and have found that all of the reeds that I liked (played to death) tend to have less thickness towards the tip.
Following some suggestions from a few people on some FB groups I have just got some Rigotti Golds for both my Tenor and alto (6 for each) and they do play quite consistently brighter than any reeds I've played before. and a bit brighter again with the Selmer (402 i think) ligature on the Lawton, so getting there!
I've been an on and off hobbyist with the sax for about 30yrs. I've only ever had 6 mps. 2 tenor, 4 alto. (Plastic Selmer, Metal V16-T75, Silver Selmer jazz, the Lawton, Rousseau JDX7 and recently a JJ Jet7 so I'm no expert but I have to say the plates on the V16's lig make a difference in response, focus and brightness. Same with Optimum lig on my JDX and Jody especially compared to 2 basic Rovner ligs.
Perhaps its not even the projected sound from the horn thats brighter but the feedback that I get from mp, maybe thats just me though. But I'd still like to find a ligature the same dimensions/fit as the 402.