You could try someone like these guys -
http://www.affordablevalvecompany.com/products.htm
The website looks shoddy, I'm not even sure if they're still going or not and the "Affordable Valve Company" logo doesn't exactly ooze class... That said, we have the 2 x 80 Watt amp in the office, I'm not even sure when, how or why it got here but I can say it's rather good. I've had it on for a year or so since we found it - It's smooth and musical in the traditional valve style but has some real grunt to back it up, bass is powerful & fluid, it even times well too.
I know there are those who insist amps all sound the same and I'm fairly sceptical on many things Hi-Fi but this amp definitely has some character and everyone who's heard it running has enjoyed it. If you want to go the cheap valve route then this would seem a slightly safer option with the home dem. Mr Everard reviewed the 40 Watt version a long time back by the looks of things and seemed to like it too. Just another option to throw in the mix!
Jim.