bobcat IS vulcan. both have less than sterling reputations. i have heard, though i can't verify it, that the hk clones marketed by vektor are also bobcat/vulcan.
in any case, they are all well over a thousand and that's way too much for me to spend on a product of suspect quality. to make it worse, it's not even just a reliabilty issue. there have been reports of major breakages and spontaneous disassemblies including injury.
again, it's all internet hearsay but it seems to be the general consensus and not just a few angry owners.