Vortex Razor HD 20-60x85mm
Have used my Vortex now for several years, including for shorebirds . With the heavy Manfrotto 055ProB tripod this scope really delivers gorgeous images. Experienced birders are also suitably impressed. For any marginal benefits (real or imagined) above and beyond this level of performance, you would have to give that serious thought. A heavy scope, but my favourite.