Www.voabali.com. Is the company I use. Have nil issue handing over our passports for the processing, it is the same at FRA at the LH FCL or in SIN at Jetquay.
Have used this service on multiple trips since 2009, sometimes it is quicker sometimes it's the same time, you can never pick it even forward planning with arrivals.
Taken from 10 mins aircraft door to taxi to 35 mins, one trip the couple behind us in row 3 J class arrived at the same resort 2 hours after we did.