I would say for Zeppelin, you'd be better off staying away from Boogie. I think the Stiletto would be the best choice out of Mesa's lineup for Led Zeppelin tones though if you wanted to stick with Boogie. The Roadster, Dual Recto, Road King, ED, Lonestar, and Mark V all have a lot of low end to them and don't hang in the same part of the mix that a Marshall would occupy. These amps also shine with their low end offerings, and some of these amps have more (Roadster) low end than others.
The Stiletto is the opposite of the previously mentioned Mesas. They can have some lows added by cranking the bass (something many people do), but they are very British sounding amps -- bright, trebly, and cutting. They can get great high gain tones and crunch tones as well. The brightness of these amps is less pronounced though, with more volume (gigging volume), and there is more bass and low end that comes out at high volumes.
I would still take a Marshall 1987x over the Stiletto though if I were doing Marshall. Mesa's rely on the preamp section for all of their gain. Marshall's are very different, in that they need volume to get crunch from the power amp tube section. They rely on both preamp and power amp gain. They are also not as "stiff" sounding as Mesa's in general, another aspect you may want to consider if aiming for a Zeppelin sound.
I'd stay away from the Marshall 1959 though. That is the big brother to the 1987x, in that it runs on 100 watts. That is too loud for almost all players wanting to coax power amp distortion from their amps. 100 watt Mesa's are different since their power amps just amplify the gain created in the preamp.
If you want to play at home mostly, get a Mesa or get a Marshall and a power soak. Otherwise, I'd get the Marshall. If you do go this route, don't forget to jump and bridge the channels!
If you were going for '80s - present' gain tones, I would say the ED or Mark V would be the way to go. For Zeppelin though, I'd strongly suggest the Stiletto or a Marshall.
