Love and hate, for sure.
As a kid it was the coolest thing ever, but the thing was a battery eating machine, so it was always a struggle to get my parents to buy a new set. Eventually they got me an A/C adapter which was... somewhat compatible. It fit, but shake it a little too much and POP, game reset. And of course that always happened after beating a tough boss. 20 years later I'm still annoyed.
I hope I can find mine tucked in some old drawer at my grandma's and give it a well-deserved overhaul.
I'm sure the search function will improve as communities grow and the instances load each other's content, but for now, http://browse.feddit.de has been my preference.