Speedy 25 .....

Damier. I bought the mono as my first LV purse just a few weeks ago and now I wish I had gotten damier just because it is a worry free bag. Also, some people think my mono speedy is fake because the LVs are upside down on one side. I don't care though. I know it's real and that's what matters.
If it's your first, I say the monogram. My view is that while it may be faked now, I think that given time the fakes and the hype will die down.

I think both are fabulous and you can't go wrong with either though.