MOTORRAD tested 12 Flip-Up helmets in the 2.3.2007 (06) issue.
I'll only list the ones that scored Good to Very Good.
Shoei Multitec: very good, 82 points (15/18/12/8/8/8/5/5/3).
Schuberth C2: good, 79 points (16/16/10/7/10/9/4/5/2).
Nolan N102: good, 76 points (17/14/15/7/7/7/5/4/0).
BMW System 5: good, 70 points (11/15/11/6/9/7/5/5/1).
HJC FS-Max: good, 70 points (12/16/13/5/8/8/4/4/0).
Ratings were based on:
Shock absorption/safety - 20 points,
Fit (on various head shapes) - 20 points,
User friendliness (operation of chin piece, chin straps) - 15 points,
Aerodynamics/Acoutics (noise) - 10 points,
Ventilation and associated controls - 10 points,
Visor (field of view, etc) - 10 points,
Glasses (ease of use with) - 5 points,
Fit/finish - 5 points,
Weight - 5 points,
For a total score of 100.
Only 4 helmets in the test had a built-in sun visor; the Airoh Mathisse RS, the HJC FS-Max, the Nolan N102 (clips to the exterior of the visor) and the Schuberth C2.
You might find a copy of the test in a few weeks on the MOTORRAD Issue Archive Page.
My personal pick is still the Schuberth Concept/C2...although I haven't seen the Shoei yet.
And I've got this backed up in case of another server crash.