This may or may not be relevant to your decision, but in the blue angel, it's only the 6v6 that use the single tube rectifier. The EL84's run a solid state, which leads to a little more brash, aggressive tone compared to the el84's in the maverick which can use a tube rec.
As for versitility, the Maverick deffinilty has the Blue angel there, with two channels. Although the clean channel on the Angel is the better of the two, the Maverick isnt far behind, and it also has a pretty decent gain channel if you can get into the sounds it makes. The Blue Angel is pretty useless at anything over a mild grit.
Also, don't be misled by the lack of a Master Volume. The Blue Angel IS a Boogie and does have an extra gain stage in the pre-amp. Alot of the grit you will hear is coming from that pre-amp which was carefully tuned by boogie to interact with the power-amp.
Infact, this is one of the biggest hoaxes on internet forums. That there is anything called 'pure power-amp saturation'. By the time you crank a nonmaster-volume plexi/fender up, what your hearing at mid level is actually mostly pre-amp gain. You just can't control it independatly of volume level. Yes, by the time the level is dimed you are hearing alot of power-amp saturation, but theres also a ton of pre-amp gain mixed in there.
Also, headroom is deffinilty an issue with both of these low wattage amps. You'lll have a hard time keeping clean over a loud drummer unless your mic'd up. This may of may not be a good thing.
I haven't had a chance to use pedals infront of a Maverick, but the Angel takes them fairly well. The only problem is when you get it really cranking with higher gain pedals, its mostly midrange and kind get very honky and unpleasant while recording.
In conclusion, if you want the best cleans boogie has to offer, get a Blue Angel. If you need loud cleans, get a lonestar or something else. If you want some versititliy with decent cleans and gain, get the maverick. If you want versiilty with decent cleans and gain at high voluems, get a lonestar.
Hope this helps more then it confuses!