I look for maximum utility in my flatline-prevention tech slots. Plascrete only really works against meat damage, and really only to prevent a flatline (I'd never use it to avoid losing cards to non-lethal meat damage).
Sports Hopper, like I've Had Worse, offers card draw in match ups where damage isn't a concern. Both of these also work well against Net Damage, while Plascrete is only a counter to meat damage.
I've used Crash Space in Criminals to prevent meat damage. It's a resource, so obviously it's not as good as the other options, but it can buy the runner another turn. Drug Dealer and/or Chameleon can also offer some protection as they allow the runner to float additional cards in hand during the corp turn.
I've also made some very janky decks that relied only on massive handsize to prevent flatline. installing 3x Oragami, or Beach Party can make a runner very difficult to kill, just by virtue of the amount of damage needed to land the flatline.