I have never played a Nomad, so I can't comment on that amp. Also, I'm assuming your asking about combos, not heads.
I play strats and teles, so I'm a single coil guy too. I currently own both a DC-3 and an F-50. Both are great amps, but they are quite different. First the DC-3. As you know, this amp runs with 4 EL84s. It's incredibly versatile and quite loud. I love this amp because it can do a great Vox type of chime on the clean channel, and in overdrive it can go from a nice crunchy bark to sweet singing sustain, and will also give you a really decent and aggressive heavy rhythm sound. It's my go-to amp, and I use it for all my recording projects and almost all gigs in smaller venues (although it can handle the larger rooms too). I'm not sure you can get the SRV sound spot on, but you'll be able to get close. Having the graphic EQ is what really allows you to dial in some fantastic sounds with this amp. It takes effects nicely both up front and in the loop, and has a pretty good reverb on tap.
The DC-3 is a really small box, and is therefore very easy to lug around, but can sound a little weak in a big room if you're not throwing a mic on it. I used to compensate by lugging a 2x12 extension cab with me to bigger gigs - this sounded massive, but got tiresome. I got the F-50 because I wanted something with a bit more headroom and a slightly "bigger" sound without having to bring extension speakers with me.
The F-50 is a widebody format, so it's a slightly bigger box. It runs with 2 6L6 output tubes, so it doesn't really have a Voxy sound; it's closer to an old Fender bassman, in my opinion, but a little more transparent. It makes a strat really sound like a strat, and a tele will really cut through with this amp. The clean channel is incredibly good. Channel 2 seems to be voiced very differently from the DC-3 - I'm sure this has a lot to do with the output tubes. But make no mistake - it will get you to the Boogie singing sustaining tone with no problem. Channel 2 has the contour feature, which really kicks the overdrive up a notch or two, and can get you close to a recto type of sound on higher gain settings. Recto is really not my thing, but this feature is useful if you're not running the gain flat out, because it serves as a kind of solo boost. What I really like about this amp is its transparency. The reverb isn't too great. Not a major issue for me since I run digital reverb in the loop, but worth mentioning. This amp also takes effects nicely.
With the F-50 you have to crank it to get to the sweet spot. For some this is a drawback - you're not going to be able to really get a feel for what the amp can do if you're a bedroom player. But once you get to open it up, you'll love what it can do.
I'm lucky to have both - I sometimes run them together in a stereo configuration. But if I had to pick one over the other, I think I'd go with the DC-3 because I think it's actually slightly more versatile, can get you into the Vox vibe nicely, and is super portable. The DC-3, as I'm sure you know, is an older amp, so may not be in great shape. I've babied mne, and it's still in great condition. I would not buy either without play testing first. If at all possible, I would go try the DC-3. It's a great little amp.
