I've ordered quite a few times from Save Express, and the ones I go for now, (after trying quite a few) are
For thickness, and incredible absorbancy, and generally being great, Absorin Excellent, or Night Extra. Really thick, a bit cumbersome between the legs (love it or loathe it?) and they just hold so much; I've never had them leak, and they always feel solid, however much you fill them. Plus they expand nicely as they get wetter.
If you want a quick, babyish, wee smelling nappy that goes yellow with pee, and rustles, you can't beat kolibri slip standard. Doesn't hold a lot, but feels great while it does. It feels messy, like it should, for a baby.
For real comfort, and good absortion, go for "Depend Barme", they don't hold their shape, they're quiet and very soft, so you can forget you're wearing them, which is great while out shopping, but not too special if you like the feel. They do hold a lot though, so quite practical too.
I generally order a pack of each, which lasts about 6 months, a couple a week.
And do get yourself a "body" all in one teeshirt thing, with under the crotch poppers. Georgeous, as they hold the nappy up so well. It adds so much security to nappy wearing.
Hope that helps
wb