7/10
If you asked me to rate it 6 months ago, it would have gotten a 9, perhaps even a 10. But nowadays, it just doesn't even come close to competition. Sure there will be a dozen people after me that ask what I want from it, it can already play all games, etc, but even so, the R4 falls short.
The R4 has no SDHC compatibility, it has about 20 games that need the ARM7 fix, and the GUI is just plain ugly. Those kinds of things are just unacceptable at this time and age, with competition such as the CycloDS Evolution, G6DS Real, AceKard RPG, and the M3DS Real, I cannot understand why the R4 is still so popular, and what all these people are thinking rating it 10/10.
Some of you might comment that the R4 team said they would add SDHC support, but until they do, I highly doubt it. The R4 team has been gone for so long, and I really don't see an update any time soon, which further downgrades the R4.
The R4 was a great cart, and still is, but there is just too much competition. In my opinion, the R4 should be long gone by now, it is old, there are way better carts out. And I honestly hope the M3DS Real can wipe out the R4 legacy. It offers a cheaper price and better features. It annoys me when all my friends who got R4's against my recommendation ask me about the ARM7 patch over and over...