I'm not going to defend the R4, but I would never pay extra
just for the name. Not in the flash card scene.
Check out the SuperCard DS were tons of people sticked with just because the 'SuperCard' label, it ended up in a big disappointment for many.
I take the point you want your card backed a by reliable team (which is very subjective) because of firmware updates, but I would compare the features and price of each card, without looking at the name and in the end decide what a name means to me.
It's not about the money (who cares 5 bucks more or less), but the principle. I find all the Chinese teams too unreliable to do so.
But in this case, for all who doesn't know: the R4 and M3 Simply (and who knows what clones to come) are based on the very same kernel. Don't stare blind on the name M3, they just OEM'ed it! They just created another selling point to keep the cash flowing and attracting customers, their real slot-1 solution is not yet released. Don't let you fool, Chinese are certainly not stupid!
Anyway, if you want to, you can transform a R4 into a M3 Simply and vice versa by slightly modifying your card, it's very easy.
Oh yes, you can always get yourself a M3 Simply skin on your R4 if you're that fanboy of M3.
Fanboys are so annoying, whether they have good or bad experiences with whatever what team, they keep fighting for that team just because they own one of their products. Don't be so childish, don't stick blunt with team X or Y, stay open for the best card that fits you mosts and compare on a per-card-basis.
Do something good with your $5, donate it to
Wikipedia instead, they can use it very well.
Although it's hard, you better await all slot-1 reviews.
If you already own a decent slot-2 solution were you're happy with, do not get brainwashed, don't buy a slot-1 if you don't have a reason to do so!