I love the retro looks of the 55SH but to be honest, its feedback rejection left much to be desired that's why Shure has an updated version.
I'm not dissing Behringers but their quality is sometimes hit or miss. I also don't think that 20 -30 years from now, they will be considered collector's items but you'll never know.
That said, you made a good choice on the SP C1. I, for one, would like to see more of these budget brands available here such as ADK, MXL, Oktava, CAD, Red5 Audio, Superlux and even the budget Blue Ball mics. Sadly, very few of these brands ever make it here and even fewer local musicians know they exist. I own and use an MXL V63M and all I can say is that for $69, it's surprisingly good especially when paired with the right preamp - makes me curious enough to consider their V67G, V69 and V6 models.