I've had the ARB OME suspension now for 3 years, when first fitted it dropped within 2 months, when I went back for the side steps they saw it and replaced the front springs with the heavy duty Prado springs, I have dual batteries, ARB winch bar and winch fitted.
I measured the front on Friday, just out of curiosity after reading some of the threads on this site, the front is sitting at 750mm the rear at 840mm, measured from the edge of the rim, the front has dropped nearly 30mm and the tyres do rub on a hard turn and a bump.
If I were to do it again I would not go for the OME, in the next couple of weeks I will be talking to Ultimate to see what can be done.
Hope this helps.
Cheers
John