The F series replaced the Nomad series in the early 2000s. The F30 is my personal favorite of the bunch- as I think it had the best tones for the three models offered. The 50 and 100 just didn't do it for me. I wouldn't call their tones modern. HAL9000 is a big F100 nut, so he may be better suited to answering questions about it. The few that I played didn't really do anything for me. If you want to go Boogie in the cheap, look for a DC5 0r DC10. They have a nice clean tone, and the distortion channel sounds like a good blend of the Mark series meets the Rectos.
Or you could just step up and get a used H&K TriAmp Mk. 1 for a little over 1K, and be all over the modern tones...
How's the Les Paul working for you?