Some people use them for basing or for having snap-off flying stands on vehicles as just some examples that would require radically different strengths. Also the precise stuff you are magnetising very much requires different magnets. I magnetise a lot of stuff and I use a wide variety of magnet sizes and strengths for different jobs - this Trygon
required about 4 different types and this Valkyrie
used three or four as well. If you can't be bothered to explain what you want don't get defensive when people ask you to be clearer.
Oh and this is apparently where you answered your own question. Although as you don't realise it I'm not sure what you are trying to say here.
Oh ya durr. Neodymium Magnets 1/8 x 1/16 Disk N42 Rare Earth. I already have some of the same size though got them in two batches and wasnt informed of the strength on them (came in a lot with auctions) and though the same size one is definitely stronger than the other (one is fine with 1 magnet and a piece of metal where the other needs a magnet on both pieces.) they both work fine.