Rapido UHF Hot-ends... Junk???

So i built the Vcore400 this year and on it's first heat up the hot-end died at around 180C iirc. Open circuit, dead.
The replacement which arrived late july/ early august has managed 57 hours of print time and last night failed mid print (260C).

Are these junk or have i just been really unlucky? My 8-10 year old E3D Hot-ends have had 1 element change between them!
Will another brand of hot-end fit in its place or will i need to repair it to print a new tool head? Any recommendations?

Any help would be greatly appreciated!