NZ doesn't always get the best range of products like these. Gym and Fitness have brought these into NZ, while keeping the price very reasonable and fair. I pre ordered the base set of the Powerblock Pros, along with both expansion sets, totaling up to 45KG per adjustable dumbbell. The staff were very friendly with my pre order, and communication was very smooth both on the phone and via email. My dumbbells arrived last week and I couldn't be happier. The quality is amazing, and there were no issues at all for me.
This product I believe is the best on the market for adjustable dumbbells. I've watched multiple reviews on the Garage Gym Reviews YouTube channel, but none have an overall polish that this product does. I did see some feedback about the dumbbells feeling slightly uneven when the metal rod weights are added to the handle portion, I will have to agree with that, it makes the dumbbells bottom heavy. That is the only criticism I have of the product. I guess time will tell the long term durability of the urethane outer coating, but from my initial experience, it seems quite hard wearing.
I do wish Powerblock offered a knurled metal handle to replace the rubber ones on these dumbbells, but I do understand that is personal preference.