This one might be ok because it has the body attached to the pants, but I don’t know it personally. Generally speaking, unless the top and bottom are joined by a waterproof zipper, the suit will not be dry if fully submerged, which is when you really want it.
Kokotat are never in stock. They make them as you order (both mec and DCCK will order for you) so you have to wait a couple of weeks, and they are US$ so expensive. You can go on their site and build your colour and style, then order locally.
Level 6 are a local company and cost less than the kokotat and seem to be ok.
Good luck! I will be interested to hear what others think