Originally Posted by
PDX Reborn
1285 lumens in a clean, minimalist design, I dig it

The Mk5 is boosted to 1600 lumens. £310 at Chain Reaction Cycles, so at somewhere north of $450 it's just a little bit beyond the OP's intended budget.
Link if anyone is interested
I'd be tempted were it not for the fact I hardly ever ride after dark and even then only need to be seen rather than to see, so my $30 flashing light is enough.