Hard question to answer. I'll post my findings. Other can. To prepend my answer,
my favorite top of all time so far is my custom 3in top in delrin that weight rougly 100g. This this is amazing. Next is line is the QSH. Bear in mind, the only type of tricks I care about are regenerations... That being said. with light wood, you can make big tops at a reasonable weight to be able to regen them... that said, the heavier the top is, the harder it is to regen from my finding.
My Watt 4in is fun but it's way to heavy for any kind of daily use... So hollowed tops will be less heavy but you can also play with the weight location.. which has a huggge impact...
So can you make full tops, yes, when i get a lath, I'll start with that most likely to get everythign down using cheap wood. And then move onto hollowed top b/c that's what I love.
So yeah. I hope it was helpful!