I finally got the Dinotte tailight and 600L combo. Thanks to the US Gov Rebate check.
Until school is out, and my summer is free, I am riding after school and end up riding at dusk. The planet bike superflash and Light & Motion Solo mv, just don't cut it. The battery needed replacing on the L&M and I decided to cut my losses on my two season set up.
The superflash works for fine, except at dusk. I have it mounted to my seatstay. Once properly set up it is quite effective. I probably would have stayed with that, had the tax rebate not occurred. The L&M was a waste. Short bulb life spans running on high, lousy light mount, and high replacement part cost.