The new commuter - jamis dakota 29er - replaced the felt qx65
Heavy suspension forks replaced with carbon fibre, heavy tyres replaced with sammy slicks, wheels replaced. bike is now a few 100gramms below 10kg compared to its original weight of 12.6kg. Its a very nice bike to ride and the carbon seats stays do make a difference to the rear end comfort.
Lights are moon 300 and izico which both together throw out around 900lumens, great for the cycle track commute of 30mile round trip.
I have kept the original wheels and shod them with mountain king II for off road fun, but thats mainly the rural canal ( some of our canal has been left original with no tarmac or gravel)