The only console I "wish" I had is a GBA SP with backlighting. I know they are easily accessible and inexpensive on eBay. I haven't bothered to buy the SP because I haven't played any GBA games in a few years.
Aside from that I'm not interested in other consoles...I'm a PC guy who dabbles in the Wii U. I mostly wish the Wii U got more games I could get behind (mk8,splatoon,nintendoland,windwaker,Woolly World,smash4...that's it so far). I would rather have a library of games than a library of consoles... /paragraphofinternalstrife