The old brittle dark gray resin was quite bad, it was horrible to work with and I had a few pieces that broke. The new white resin is far better both during assembly and during transportation. My one issue with is is that there are still a fair bit of bubbles during the manufacturing process. Most happen to be on the underside of the model, so not a huge issue but they are there and those can still damage details.
With that out of the way, love the models regardless. I did not expect the gun options but they were very much welcomed. I would strongly suggest you offer pictures of all the options in a kit. It might not be a main selling point but it could be a tipping point for some customers.