This is my first double action AB and as a beginner, it's ideal to get you started. If you are a more experienced modeller, like many here, save up the pennies and buy brand quality.
I have tried to be very careful with maintaining and cleaning, but at some stage (still don't know how) I bent the needle just slightly. Better to do this on a cheap knock off than a quality AB.
Having a bit more experience with AB now, I have moved to a Nozomi for detail , whilst keeping the BD-180 for general, or larger coverage jobs.