I use the yellow Mitchelin ones after seeing a good recomendation for them. I was a bit concerned how flimsy they looked, but just a few days ago used them to fit my new Swhalbe Marathon Plus which where a nightmare to fit because they were such a tight fit, but know matter how much leverage I applied, they only bent and I could not break them even after I could not apply any more leverage due to them bending. Only problem with them is they do not have hooks to fasten to the spokes.
The Park Tools tyre levers are available at
Evans as I have a set of them as well but never used them yet.