Can't tell you about clip-on aero bars. I have a TT bike. As far as aero helmets, I bought the Lazer Tardiz and have been very satisfied with it. I just got it last fall and have only used it a couple of times but it is very comfortable and there is a port at the top that you can squirt water in to cool you off and a system so the water runs to the side of your head and not in your eyes. I haven't used that yet. DH, our training partner and I all ordered the white helmet as we found them on sale at the end of the year last fall. I placed yellow hybiscus decals on mine so we could tell them apart. Don't think the guys will be picking mine up to use!
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"We don't stop playing because we grow old; we grow old because we stop playing." George Bernard Shaw
Luna Eclipse/Selle Italia Lady
Surly Pacer/Terry Butterfly
Quintana Roo Cd01/Koobi Stratus
1981 Schwinn Le Tour Tourist
Jamis Coda Femme