Hi!
I'm using Pigeon at home and Avent at my mum's. I've used the Avent one shortly before transferring to my mum thus can do a little comparison. Hope this helps...
Pigeon Pros: 1. Easy to clean as no enclosed parts.
Pigeon Cons: 1. The steam outlet is at the back of the unit. Thus when in use I have to face the back of the unit in front for steam to escape, as I place the unit on my kitchen top which is against the wall and my cabinet.
2. Flimsy tongs. Mine broke after a few months of use.
3. Dunno issit my unit, the power-point connection is always loose and needs a bit of fiddling to ensure its working everytime.
Pigeon cycle: 6 mins with 120ml of water. When not opened, the steam steriliser keeps contents sterile for up to 6 hours.
Avent Pros: 1. No need to lock unit before sterilising.
Avent Cons: 1. Need to descale more often as scales will accumulate in the bottom enclosed portion.
2. Too many basket racks to fiddle with but can remove if you dont need that many lah.
Avent cycle: 8 mins with 90ml of water. When not opened, the steam steriliser keeps contents sterile for up to 3 hours.
Aesthetically speaking, Avent is nicer
You may compare the freebies too. The freebies that came with my Avent was useful (think I had containers, toddler mug, brush etc.) and Pigeons was bottle cleaner and bottles. Lastly, Avent is England made and Pigeon is China.