What is the difference to the Campingaz Party Grill 400 without CV? As I have read, the CV can be operated with the "Campingaz CV300 B/P gas cartridge", which is more efficient but at CHF 11.90 (content in g unfortunately unknown) also a lot more expensive (unless it contains significantly more g or is faster and hotter). Hence my question. Can the CV also be operated with the cheaper "Campingaz gas cartridge C 206" CHF 4.80 (190g)? Which cartridges do you use? Thank you for your answers and experiences.