It has a 100hz display. 100hz display radios were last seen on ham radios in the 80's thats how crap it is. Most radios today have a 10hz display and have very good accuracy. The tuning resolution on this radio will also be poor compared to a cheap DDS ham radio. Even the cheapest mobile radios like the FT857 comes TCXO which basically means that a radio like FT857 will have much better stability.
This strikes me as humorous. My Drake TR-4c has a vernier PTO and I couldn't say if I'm +/- 100hz to save my life. I just tune to when the received signal sounds natural and leave it at that. I assume those stations receiving me do the same, as I don't have off-frequency problems. It is not "crap" and I'd guess has better performance in some regards than some modern rigs.
I don't dispute the quality of the Magnum one way or another. No knowledge. I can say the HTX-10 is a great little radio, though.