I've only ever used a traditional iron so a handheld steamer is new to me but oh my what a game changer!! It's so much quicker not to mention no need for an ironing board. I used this on a silk slip dress that had been folded and stored away so creases were everywhere and it got them out no problem. It's easy to use and has additional heads which is handy. I use filtered water as recommended to keep it as clean as possible and to prevent any water build up. 
A couple of things to mention is it is quite heavy but not uncomfortably so I can steam a few garments in one go but anymore and my wrist/arm starts to ache. It doesn't hold as much water as my iron and I can only steam a couple of garments before needing to refill but to be honest I only really use it to steam what I want to wear the next day so this isn't an issue for me. But overall it's great and I'll definitely be packing it to take away on holiday over the summer!