Also make sure you get one with the biggest glass area possible. Mine is a Charnwood supplied and fitted by Bradley Stoves, good job all round
http://www.woodburners.co.uk/_-Charnwood-Country-4-Stove-_/product/?pid=11444
No advice about cost cutting but was the best money I ever spent on my house. Love those winter nights. I even put a trivet on top and do a slow pot roast, that saves on gas. Oh you wil never never regret it. Ensure you burn well seasoned logs, I but mine at least a year in advance and rotate...