I've used quite a few different types and would definitely recommend the petrol versions over the electric ones. Some of them will also collect and shred the leaves which is very useful if you have a smallish area to collect. If you have a larger country garden it is generally easier to blow them into a pile and then collect them up as you would be emptying the bag too often. We have a Shindaiwa petrol backpack type one. Amazing machine, but only necessary if you have a very large area with lots of leaves to clear. Price wise I'd say you're looking at anything from €50 for a cheap electric one, to €200 to 300 for a handheld petrol model, with the backpack types in the €600 euro region.