At 3-5th floors, in a few years time, the units can even be blocked by their landscaping trees! (so much so for paying higher prices than those at higher floors!).
Noisy? My experience is anything less than 10 floors are probably quite noisy due to noise from pool side (especially the kids and the talking downstairs!). In fact, those on 2nd & 3rd levels are better off than those from 4-10th levels (because 2nd & 3rd floors have trees to shield off some noise - but then most views will be blocked by the growing trees!).
There are people who are even willing to pay $1300 psf for West Coast in the middle of nowhere! But that doesn't mean that it is really worth it there.
Higher looking at neighbouring block? Even if so, at higher floors, you are not subjected to the noise, dusts, mosquitoes, insects flying in the house etc!
Developers sure know how to price their properties to maximize their profits and they know what prices can move the properties. If lower floors can sell at higher prices, why we didn't see developers price lower floors higher than higher floors? The reason is very obvious. You better and more knowledgeable and more experience than developers in this area?