I cater towards CG, and go for LN if i am 'constrained' by a need to be lawful, i.e., a follower of some semblance of laws.
with regards to DMs banning alignments: This has been a game breaker for me in our 1E circle, because our DM of 30 odd years is stringent , and if you play evil every NPC hates you even the evil NPCs unless their racial ethics accept you ( see the plethora of charts in several handbooks of the era), this translates to the PCs are all good, the world they fight is all evil...
I also found that the PCs gravitate toward inter-party skullduggery, which worked quite well in the arly days (that first time your fighter revealed himself to be an Assassin, and sold us all to the Slavers in A4, making off with his bounty..great ending...sort of, and it worked, once!)
As well as, I found players I had been playing with who were forced to play characters in this one quadrant of the alignment spectrum meta-gaming the DM's perception of alignment, and getting away with murder ( literally!), I saw LG's being chaotic, and good player doing evil things, and I came to loggerheads over the whol idea of banning other alignments from chargen. It's wrong, in that I mean, it's not really how groups of people work. We are all a little bit evil, and hopefully most of us are a more bit good, so there are these grey areas. And now I encourage my players to play any alignment they want at the table, but I want them to explain their actions when they do something 'meaningful'. I tell them at the start of a campaign, during chargen and party formation, that they need to have a reason for joining together and a cause or a goal that they are in agreement to work towards, otherwise they just wouldn't be in the same party. That they can be evil, and they can be good, and they can still coexist, no different than we all do in our work places and in public.
It's been a couple years now and my mini social experiment seem to slowly gaining gas with these old grognards, as they have an NE,CN, NG, LN, CG, and LG all cohabitating without any arguments
