Is it true that you may enter the funding cycle as an LLC but that as a practicality you won't exit funding as anything but a C, that angels and VCs will insist on this restructuring? I think the answer is yes but I don't know. Can someone price the cost of converting a Delaware LLC to the C structure that VCs will expect? I think (again, I don't know) that we're talking about a couple of grand of post-money lawyer t…
There's never any hard-and-fast rule in the startup world, but pretty much any VC will want you to be a C-corp instead of an LLC.
(You're unlikely to get refused funding just because your company is an LLC, but they'll likely want you to restructure before the deal finalizes).