The 21st is great in comedy aspects, and also in understanding how strong Kuririn and Goku really became, and of course battle where great and Jackie Chun was awesome.
The 22nd had some really cool plot with the schools' rivalery, great and VERY enjoyable fights. And of course, Tenshinhan, which has one of the best character arcs in the whole series.
But hands down, my favorite will have to be the 23rd which was also very touching at some moments and had some of the best fights and character development in the series.
Kuririn understanding his limits by giving up to Piccolo and admitting defeat.
Yamcha learning to never underestimate his oponents, no matter how strong you are.
Tenshinhan finnaly getting over the Crane school and leaving them for good.
Goku fulfilling his destiny by fighting Piccolo Jr. and beating him, and also getting married on the way.
And Chaozu... for being a good plot device... I guess...
Overall, this arc has some flaws, as mentioned above, but it was the most fun, enjoyable and intresting out of the 3. and also the end of it when looking back at the all series and realizing how far we've come was perfect imo.






