Beepster
Never particularly liked Marshalls anyway to tell the truth aside from the JCM 2000 and some crazy souped up custom anniversary jobbies I've had the opportunity to jam/record through. I like HiWatts and 5150's much better. Those sounds are quite a bit harder to duplicate with a sim unfortunately... especially the HiWatt top end and input response.
Only just spotted this. For some reason the forum software decided to unsubscribe me from this thread.
As it happens I'm not an AC/DC fan, but I grabbed a couple of tracks from itunes when I saw this thread and I did see them two or three times back when they first toured the UK. I suggested a JTM45 rather than plexi because I've seen stuff about the band by knowledgable people and a pretty common story is that they used two or three Super Leads each live to get the volume, but recorded using JTM45s.
I'm not a Marshall fan either.....
I have a plexi 50watt Lead I bought very cheaply in the late 70s but never use it nowadays, partly because my taste has changed a lot over the years and partly because the point where picking dynamics or guitar volume can make it go from clean into breakup is stupidly loud. Another reason I'm not a fan is I've owned three different models of Marshall amps and two of them were the most unreliable bits of gear I've ever used.
I know what you mean about amp sims. If you're after a "real amp" sound and reaction to the guitar it takes a huge amount of tweaking to get a sound that's almost as similar to the "real thing" as instant coffee is to ground. For amp emulation I much prefer Sansamp Character series pedals to anything digital, and even with them the Tech21 recommended settings usually have far more gain and distortion than the real amps. And don't get me started on the many failings of digital imitations of overdrives and fuzzes :-)