I've now got two Brittanys, having always had springers before. I think they are great dogs to work, provided you give them the right type of work to do. I haven't found them particularly difficult to train but they are slower to mature than springers so it just takes longer.
If oyu want any more info on the breed try http://thebrittanyforum.myfreeforum.org/ loads of info on there (don't call them brittany spaniels though or they'll probably string you up :D