I agree with previous posts - go for the O/U.
I had a Lanber and could not fault it for the money but if you can stretch a bit further have a look at the Winchester Selects. Plenty of models from around a £1,000 and the build quality is far superior.
It's made by FN Herstal so you get Browning/Miroku quality at knock down price - back bored barrels and invector plus chokes.
Sorry if I confuse you further but it's worth a look if you get the chance.