I'm only 22 so I imagine most of this stuff is still too recent for anyone else to have nostalgia for but the mars mission product line still holds up in terms of design imo
aw shit I only had the helicopter thing but that was a monster
I think Ninjago City is my favourite. The Creator line Roller Coaster is one of my favourites too. It's massive, but looks great and kid me always wanted Lego to release a roller coaster set. The build could be repetitve, but I love the way it looks next to the ferris wheel.