Im running 6x9's....using the Soundstream tarantula series...best speakers I have ever heard. They use a seperate crossover's and kick ***....distortion free at any volume...crisp and clear

 

I'm considering some Polk MM651UM speakers for my ordered RNR saddlebag lids. What's catching my eyes with these is the fact that the tweeter is suspended so water build up will be less of an issue and crossovers are built in. I do expect these could collect some water at some point. What I'm not as thrilled with is the fact that these type grills allow a bit more dust/debris accumalation in the cones. Another option is Polk DB651 speakers (also marine rated) for $60 ($90 cheaper than the MM's) and add a 3 yr replacement warranty for $11. Really wish I could hear some MM's....
**Just found out that the slightly oversized MM651's will be a bit too big for the lid cut-out. Oh well, back to the DB651's or the Memphis Audios**

 

i am planning on using some pioneer 6.5s ts-d602 model, i have them in my wifes car and i love them so i think i'm going to grab a pair for the bike.