i've been hearing that the new magnum Rs are very nice. have only heard so-so reports about the 858 Rosados.
i've been told the wrappers are different, but not sure how that can be, as they are both tauting the whole "rosado sungrown" thing. remembver that a rosado is merely a shade of a sungrown wrapper...
you can also expect that the overall composition of the 2 blends (magnum/858) is just that, 2 diffeerent blends. they are not the same cigar.
when comparing the 2 different lines side by side, the wrappers do not have the same color, but that doens't mean they both aren't rosado sungrowns. as i said, rosado is just a shade, and there's no way that they can be exactly the same throughout the entirety of both releases.
i cannot comment on the regularity of the 858 release. i would expect that it's a one time thing and not a regular producgtion. however, the megnum series is regular production to my knowledge, which lends to the belief that they have a steady supply of rosado wrapper leaves, which to my knowledge, the scarcity of such leaf was the reason for the extreme limited nature of the 858 rosado.
NOTE*** this entire post is pure conjecture on myh part, as i've not smoked either of the 2 blends mentioned...magnum and 858rsg. i've got them, just haven't smoked them yet.