This month's Good Woodworking magazine has a buyer's guide and review on routers.
Since this question comes up quite often, I thought it worth posting a summary.
They divided the routers into three groups - lightweight, mid-range and heavy duty. Each is scored out of 5.
In the lightweight range:
Trend T3 5 Bosch POF 600ACE 3 Hitachi ZK2008 4
In the mid-range:
Makita RP1110C 4.5 Trend T5 4 Mafell LO50E 4 Metabo ofE1229 4
Heavy duty:
Trend T11 5 Hitachi M12V 4 DeWalt DW625 4 CMT 1850 4 Bosch GOF2000CE 4
The DW625 and CMT1850 are essentially similar, based on the Elu MOF177E design. The new Trend is also, but scored higher because of the built in fine adjuster.