I only saw the first Anime and I had a sh*tload of fun.
Sure there are some negative points, like the fact, that the whole Kyoto-Travel was brought to you in two or three episodes, or that the last episodes, where Asuna died, came so suddenly. Hah, I bought the last DVD and on the back of the case was written: "Negi SPringfield and his class are planing a musical for the festival but end up going back in time." I thought: "Well, that would be fun, I like the festival story." But then I watched first episode and Asuna died. The second episode startet with everyone crying(And Negi looks realy annoying, when he cries). Almost no jokes on the DVD, exept of the last part, when they are all in Germany(I loved that and the sign was allmost correct written.). But the most of the Series is imo worth watching, but best would be subtitled with original audio.
Take my hand and we'll be Kings
We'll be racing on the winds.
Come with me we'll fly away
We will reach another day.
Thunderpriest - Fly away