Even in it's day there weren't a lot of them campaigned, It's hard to find information on them, I'm not even sure of the correct spelling, I have seen it spelt a couple of different ways. It was flown in the 2meter class and the DB was flown in class-C and was smaller with a engine limit of .61. The DB is a kit and has all built up wings and stab. The Arial has a glass fuse and the wing and stab are foam core. The one I have was found in a local Hobby Shop in the used plane room by a friend and he scooped it up. He gave it to me this year and I installed a OS 1.20 and didn't car a lot for the plane. After I was given a YS 1.20FZ and installed it the plane turned into a favorite.
The new pattern planes have kept the lines but made the fuse taller for better side force plus I have been seeing alot of the side force generators attached to the wing tips.
In the pattern forum you can find a lot more up to date information. Without having any pattern events in my area I'm really out of the loop these days. The sub forum in pattern is the classic pattern forum if you like the older type of planes. For sort pilots or weekend pilots any of the pattern type of planes will make you look a lot better then you really are. One of the reasons I like them so well!! Go look in those forums for a lot more information, you can see what is going on today and not years ago from someone like me.