I really like my Valvetronix. I know that the models don't sound exactly like the real thing, but for home playing I think it's great for the money. I did have the 30 Watt so I could use the attenuator, but my bro half inched it and left me with his 15 Watt model (which I'm selling due to lack of space). Opinions on them are mixed but the amp can easily out perform my playing ability, so it's good enough for me.
Funny you should mention the Amplug (AC 30 version), that's what I'm going to replace the Valvetronix with as well as the little speaker cab for it. Tiny house and baby means the amp has got to go..... sound familiar Ian?