I was considering a balsam hill but then couldn't justify the cost. In the end took a punt on this one from Homebase www.homebase.co.uk/6ft-norway-spruce-artificial-christmas-tree_p435677
It was £80 and looked a bit crap in store and when I first put it up. But I've now spent a while plumping out the branches and I honestly think it looks pretty realistic! And really good value when you compare to balsam hill.
Not decorating until tonight, but will share a photo when done.