Lil-lets are the best, yo, because they have no applicator so you can push them up into the comfiest position. And they expand in a more natural way - like, they are shorter, but expand widthwise instead. I used Tampax at first and always felt them, but then I switched to Lil-lets and they are so much better! I never feel them. I think because Tampax are longer, you feel them near the mouth of your vag, but with Lil-lets you push them up further because they are shorter, and so they get into a place where you don't feel them. And because you use your finger rather than an applicator, you can totally find the best position to put them. And the string is really long, so they can't get lost. I actually tried Tampax again a year ago, just because I came on my period at college and the shop only sold Tampax, so I bought them and figured they probably weren't as bad as I remembered - but they really were, yo! I felt it the whole time I was wearing it.
BTW, Lil-lets are totally on sale at the moment in Asda! Four packs of 16 for £3, yo! Long live Lil-lets! I've stocked up for the entire year!