We have an oval Ronson 6 litre and i love it!
We go out and leave it on and never had a problem
Sometimes the meat tastes a little stewed, but as Christy says, experiment with flavours so it tastes better
It makes dinner in our house alot easier, meaning we actually get some and it's homecooked and healthy.

I also put legs of lamb and roast beef in mine and it tastes alot better than any roast i've put in the oven, the meat just falls apart and melts in your mouth!