Not yet made your choice? You should know the following: - Who can do more can do less: a telescopic will often be the most useful (no need to climb) - An aluminum model will almost always lighter. - There are two types: blunt blade and anvil. The second is preferred for hardwood. The free reed business models will draw on fibrous wood (laurel, privet (...) - Systems with remote racks or blades facilitate your work. - Prefer Teflon coated slides. - After each use (and the first time) cleaning with alcohol 75 ° and spray silicone lubricant on the joints.