Solid roller cam Vs Hyd flat tappet

I would go solid roller if I could afford it hands DOWN. The myth of frequent valve adjustments on solids nowadays is just that. A MYTH. With all of the quality parts we have available now, I would be more than surprised to see you need an adjustment more than yearly, even racing. Also, if it sees street time, my recommendation would be for "street roller" lobes, as they are not quite as aggressive as standard solid roller lobes and will allow everything to actually live a long and happy life. Just my 2 cents.