Much has been said and discussed on this subject so apologies if this aspect has been covered elsewhere and I've missed it, but mine need doing and I can see that there are basically 2 types available, those with grease nipples and those without. Are the ones without even worth considering? I don't do much (if any) off-roading in the old girl ('98 reg 110 300TDI) so it will generally only have to deal with crud off the road and maybe towing the odd trailer now and again. Also, is there a make or type of grease that is best to use with or in them? Any advice or insight welcome, thanks.