Anyone used these on small coppice? Many of the reviews of the Black & Decker GKC1817 criticise it for its limited battery life. The Makita saws get mixed reports. Both are under £100, as is the new Trueshopping 18V 10" saw with Oregon chain & bar (just £65), no reviews yet - has anyone seen or used this? Next level up seems to be the excellent Bosch and Stihl models but they're £300+. Advice welcome, if only to steer clear.