I got my first Lynx only recently (within the past few of month) and I love the thing, stock screen and all. This portable would have blown my mind if I could have afforded one back in the day.
It's also really easy to collect (cart only), compared with a lot of other systems. Even going through Ebay and mail order, the vast majority of the library can be had for reasonable prices.
Right now, I'm 19 titles away from having the complete library of officially released titles, with the only big ticket game left being Battle Zone 2000. I "cheated" a bit with the telegames releases, which I got from Telegames UK (reprints, but "official" reprints) boxed with instructions for around 69.99 each.
I've also got some unofficial releases, but I'll likely pass on homebrew games (though I did get Alpine Games just because it's so impressive, and Loopz because I love playing puzzle games on portables).