I'm not sure that Bumblebee capacitors are going to 'enhance' the sound as such. They won't suddenly turn it into a '59 Lester - and if you are just replacing with a different type of the same nominal value there's a good chance that you won't notice anything at all (bar maybe a slight difference between the tolerance of the values). The ones that PRS fit are nothing exciting, but they do the job.
Having said that, I do often change my tone caps for orange drops. This is because I bought a big bag of various values a decade or so ago so I have them in stock. They are decent quality and they are cheap. I don't think there's any point in getting anything more exotic, but at the same time, if you want to spend money on something fancy then go for it - if it makes you happy then in the grand scheme of things they are a low cost mod to do.
Now, what I can suggest if you want to get a more vintage feel to the sound is to check for the presence of a 'treble bleed' capacitor on the volume pots. PRS fits these as standard in most models so there is a good chance that you will have them too. If they are there then try disconnecting one of the legs (you don't have to take them out completely, just disconnect from the circuit). If you like what that does for you then you may also want to change the value of the tone capacitor as well, as PRS use a 0.033uF cap and you might want to go to a 0.022uF to open up the top end again after removing the 'treble bleed' cap.
