Ya, NES Burgertime is mostly a nostalgia purchase (not that the game isn't fun). I am aware of the Game Boy version, but not that it's apparently better. Very interesting. Unfortunately, I find Game Boy games a lot harder to find.
I am aware of the many pitfalls of Rambo. We've probably all seen the AVGN video. However, I've always thought it was an intriguing game, and it also has some pretty good music. Plus, it was cheap. I've recently began playing Simon's Quest, and I'm really actually enjoying it, so I am looking forward to playing Rambo for myself.
I also went ahead and bought Boulde Dash, and am very glad that I did. It's a very cool game. I continue to look forward to your future installments, and hope that there are a few surprises in there!