TM30 is also a 10" speaker, no? It's a single-channel "recording" amp (like TM10, but with more wattage).
TM60 was the "live" amp with an excellent footswitch (and even a courtesy AC outlet!). I tell you, if TM60 was about $300 new, I probably wouldn't even ever notice the SCXD (because I am usually repelled by anything digital).
It seems that "tubes in power section, solid-state preamp" was predicted to be a much better design right around when hybrid amps with a single preamp tube and solid-state power section started coming out. I was searching the other day, to read up on "sag" and rectifiers and some "tone" page was talking about that without any reference to SCXD.
SCXD is just the first CHEAP amp with such design. A couple of modders have said that it's built "better than it needs to be" in terms of PCB components, so quality seems to be solid.
Again, while I still have very high regard for Tech 21 stuff (SansAmps especially), I can't help but feel that it's OVERPRICED. Not just from my hobbyist's point of view. In absolute terms. Professionals can just as well afford real-deal tube stuff and higher-end direct boxes. There's no way any SansAmp DI can reasonably cost more than $79.99. But they obviously take advantage of their little niche and get away with it, so I can't blame them for being successful.
Me, I currently use Behringer "SansAmp" clones (
adi21, bdi21 and gdi21). They're great.
So, in that light, I feel SCXD to be an excellent amp. It's not that heavy, either (it's a 10", remember). I had to special-order a footswitch for it (through GC), but it's a 2-button one, works great. For me, to be practical, an amp NEEDS 2 channels. I have everything I want in it, even though I could easily want more, like a reverb separate from other FX, an FX-loop (can be added by modding) and prefereably modeling on both channels, but I haven't "needed" all that yet.
I would strongly recommend anyone even reading this thread to at least TRY the SCXD. I was (and still am) a total enemy of anything digital (for guitar sound) and yet I love this amp. There's plenty of die-hard fender purists (i am not one of them) who are way snobby (I'm not), and even some of them have said that SCXD has true "blackface" fender tones. So don't take anybody's word for it, try it for yourself.