Ah, welcome to the wonderful world of chasing your tone...you might as well buckle in, because it's a fun ride...
Now, there's nothing wrong with starting out on a Valvetronix, but it remains a small-watt solid state amp with a tiny speaker......whereas Page usually/most likely recorded with low-watt TUBE amps, which makes all the difference.
But yeah, it's surprising how lo-fi Page's sound really was -- the real secret to his sound is his technique, and his ability to find music in all kinds of weird invented chord shapes...lots of open strings too.
Anyway, I appreciate the link to the AC30 ... I have the AC15cc1, which I like a lot, though it's more limited than the AC30.
Still, I much prefer a low-watt tube amp -- you'll rarely have the occassion to push a larger amp....even a 30 watt gets way too loud too quickly. A 100 watt tube amp is overkill, unless you're playing stadiums or like a really clean sound.
I'm a big fan of the Vox sound -- I really like the way mine opens up ...takes about an hour so after it's been switched on...but then it really starts to sing.
But I'm also waiting for the delivery of a new solid-state amp (for a dual amp setup), get that late 70s, early 80s punk sound.
I used to use a Tubescreamer, they're great-sounding pedals, until mine broke. Now I'm using a Dod Punkifier...completely different pedal of course, but it fits really well with the sound I've been going for.
'Cause you know, once you have the amp, you'll start going through tons of pedals....
Edit: heh...soon after posting this, I came across a new Digitech Distortion Factory going for a great price on ebay...couldn't resist....has seven distortion emulations AND stereo outs !