I can recommend the bosch Li-ion one i have one with the schumacer/EDS power tips and its great for anything 1/8th related !
This is the one i have
http://www.argos.co.uk/static/Produc...7C14418778.htm
If you lookout in Argos/B&Q/Homebase you can usually find these on offer.
The Makita one is awesome but at £150 it's a bit steep.
Mark