fdd5d689_e_Notes_on_Coupling_Capacitors__Impressions_HV
[Brand] BC Components MMKP 383 Metalized Polypropylene, 2.2uF 250V tested $3.25 [Impressions LV] These are the light blue box caps that everyone seems to end up with from Digikey. They only come in values up to around 2.2uF, so if you need larger you are out of luck with these. Overall, they are not a bad sounding cap. They are less grainy in the midrange than Solens or Axons, and are also slightly less warm and syrupy perhaps even bordering on hard sounding. Additionally there can be a little bit of lispy-ness on the top end, though this does not stand out as a strong characteristic. This puts them right beteen the Panasonic and the Solen as far as brightness, perhaps suggesting that they are the most neutral of the bunch. However, the resolution seems to be slightly better than either of those, though only slightly. The biggest down side is that they are a little slow and sluggish sounding, and thus lack dynamics and don't pop on the bass so well. This can make them a little boring. Worth a try, particularly if you are mounting them on a PCB. [Rating] 2 [Impressions HV] 
Basically the same as before -- pretty clean and clear, not harsh at all, but a bit on the slow side.
ecp audio diy: Some Notes on Coupling Capacitors
Impressions HV