Anything that is of quality....simply don't ever shoot crap unless you have too.
Strengths:
LIGHT
Accurate
Unique Designs(i got the Joydivision)
Weaknesses:
Have to you use rubber squeegee, not necessarily bad.
Expensive
Review:
When getting this or any barrel, i don't reccommend getting a kit or multiple bores if shooting semi. Get a larger bore .691 or .693. This way you will be able to shoot anything out of your barrel and really with ease and accuracy. I was still putting ball on ball with small .684 paint in my .691.
Now the thing about this is it will shoot just like a AA or a UL and for the same price as a UL it is a hellova lot lighter. Some say they can break? i haven't seen this nor believe it. It is a very sturdy marker.
Conclusion:
Great barrel, the new line though is just cosmetic if you want more for your money get a basic one. This is just a cosmetic improvement.