LA heads for me too! Better shaft stability with shaft mount rockers to name one benefit. Once ported correclty can rival magnum heads. Only drawback can be open chamber.
IMO, better than rival.
Open chambers can be milled away. And it can be quite a hefty milling. But it is possible.
To be honest, there's worse things than an open chamber to be worried about. I'd rather build with a flat top piston over a dome. Even a small dome. But that's the other fix to an open chamber.