I would say it is down to personal preference, one drag has no real advantages over another to me, I prefer front drag myself as I usually have the spool in the palm of my hand when playing a large fish and it is more natural to me to adjust a front drag than having to faff about at the back of the reel. One thing I like to do regularly with a front drag reel, is to get your spools and take out the circlip and clean the double washer that sandwiches the fibre washer of any rust and give it a light oiling with something like corn oil as this will keep the fibre washer expanded, also when you have finished with the reel loosen off the clutch to keep the pressure off the washer.