Hittite is by far the better component company. Additionally, Hittite cover some very high frequencies and broadbands, that Mini circuits does not.
That said, if you are talking about just some tooling around in your basement, most of the hittite components come in leadless chip carrier that have great high frequency response, but challeng an amateur with a soldering iron or hot plate to assemble correctly. ANYONE can solder an 4 leaded minicircuits amp onto a G10 board!