I've been eating Marmite since before I could walk and I expect I shall be doing so for the rest of my days. I've tried most in your collection (though not the Peanut Butter version!). I'm not too keen on those that have other ingredients (e.g. Guinness) but the XO is quite nice.
I rarely travel without Marmite in my luggage. Any hotels I stay in that provide it gain an extra star in my Tripadvisor reviews. There's a small pub in Oxfordshire that Mrs NJ & I use quite regularly for short breaks and the guv'nor always gets a small pot in just for me when he knows we are coming. Can't beat Marmite soldiers!