no clue about the first one. they must be trade names for items in your country. i have done many vivs using expanding foam and silicone. it works well, but is smelly and messy. you can also cover expanding foam with waterproof wood glue/ coco fiber (my favorite), or non sanded grout. then there is the clay metbod.

suffice it so say, there are many options, all have their ups and downs. it mostly depends on what look you are going for and your comfort level of working with certain materials.