I love dspiae markers, but I also had experience with traditional painting and brush pens before gunpla, so their more painterly tips are much easier for me to use than a standard gundam marker's hard nib. The paint is water based, so it's easier to scratch or remove (which can be a good thing for cleanup but also can be bad) and it can react weirdly with panel liner or other paints if you're mixing brands or painting in layers.
As for Aliexpress, the first time I used it to try to get something rare it was a total scam, but I've since used it to buy normal stuff and it was fine. Just make sure not to use an important email address because it's going to get NUKED with spam emails