I'm a 10yr+ Nespresso user and never used other caps than Nespresso. If you cheap, you can buy knockoffs, but reviews are just so-so and if you really, really want some of your preferred, specialized beans, you can always buy a couple reusable pods that you can fill.
Now a few stores around town and it's especially nice if you want to try some of the caps, they'll have you sample them.
Now on the flavors, I have more than 30 at home and mostly use the same ones all the time + the flavored ones.
I drink lattes in the morning and occasionally espressos on their own.
For Latte, I go for a 3/4 glass of milk (heat it before, I have a Nespresso with a a built-in milk frother...) and always use two capsules, generally one strong (9+) and one flavored (they are all level 6, based on the Livanto). So usually one cap Kazaar, Indriya or Arpeggio (Arpeggio was made specifically for lattes, goes well with milk) plus une cap of flavor or if I feel like a standard stronger latte, I'll go with 2x Kazaar
This year's flavors, unfortunately are note the best ones but they are still good. A wicked combo is the SacherTorte and the LinzerTorte, I keep drinking them in the evening, it creates a Gâteau Forêt Noire taste, very desert oriented treat.
For espresso alone, it will depend on the time of the day and strength you want, but I rarely go lower than lv8.
All caps have a different taste, you really gotta try them and that is what makes Nespresso great, you don't have to grind a different bean every morning and set your machine accordingly based on your taste, you always have a 8.5/10 score cup with a different taste for everyone, in seconds without a sloppy mess to watch after.
If you're a freak like me, you end up like this... The flavor you drink regularly close by... A stash of your faves...
Plus a 'reserve' of special (and now rare, like 30$ on ebay...) flavors that you'll keep for years and drink once in a while, like on the last pics (some are 10+ yr), for example, the Abricot (2007 I beleive...) still taste like when I got it.
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