Viewfinder magnifier... and the data underneath the image

Hi guys,

I checked the information in the threads in this forum about different viewfinder magnifieres... (thanks all posters!) but I didn't find much information about with which magnifiers it's still possible to see the shutter speed, AV, RAW/Jpg, remaining pictures, ISO and so on IN the viewfinder....

which one would you recommend? I shoot a wedding in one month with a K5, mostly AF glass, but quick-shift-focus possible... so a bigger VF would be nice.

I care about the shutter speed, AV, ISO. the rest of the data is not so important

Which ones do you think is the best? I don't wear glasses btw.

Thank you very much!
Kevin