holed glides suck up more water but wont pick up much 'debris', bits of carpet fluff etc, hybrid pick up a bit less water and will pick up bits of fluff and smaller bits off the carpet, slotted glides pick everything up but will leave the carpet a bit damper still.
all of them will pick up more moisture than not having a glide but more important unless your training for the olympics and want popeye muscles, they will save you being exhausted at the end of the day, the wand moves across the carpet SO much easier with a glide.
find out the make of your wand and phone around, hydramaster is one that springs to mind but others must be able to get them, usually around the £100 mark but worth it.
colin
