Hi
If you can pull the parts together yourself I think you could get a better amp:
George anderson at Tubelab has a number of great pcb's including the Simple PP, Simple SE & SE. I built the Simple SE with great results.
http://www.tubelab.com/
Shannon Parks over at diy tube has 8 different types of amp pcb's covering all topologies: I've built the GetSetGo with 6B4G's (probably my favourite amp) and a Clementine using 807's.
http://www.diytube.com/phpBB2/index.php
I bought transformers from Edcor & from Transcendar in the states although postage has gone up a lot lately (this was a few years ago). Also Bluebell audio in the UK are very good.
If you want to avoid the cost of output transformers you could try one of the PASS diy zen mosfet/jfet circuits? with a valve preamp. I recently built the Ampcamp 5wpch (jfet) amp from the boards on sale at Diyaudio and this held it's own against my valve amps for not much money (although currently out of stock).
http://www.diyaudio.com/store/amplif...amp-kit-1.html
regards
Mike