I don't mean to be "that guy" but I think the best way of playing GB, GBC, and GBA games is a IPS screen modded in along with a rechargeable battery mod to replace the need to swap out AAs. I guess costs all depends on whether you can do it yourself or not, but it would likely still come in cheaper than an Analog Pocket, which would be my second choice. I've never been a huge fan of the SP, mostly due to non-ergonomic it is. But yeah, no emulation, all original hardware for the games to run on, and a goergeous, bright LED screen