It's my main Rans S6 radio & I have no qualms about the Vertex 220, but their other models [according to posters various] can be dogs. Price is/was good too from the Far East. There is said to be service available in the U.K.
[ Vertex VXA 220 Service/ spares access U.K.
Nabishi UK Ltd, 16c Upton Road, Tilehurst, Reading,
Berkshire RG30 4BJ.
'phone 0118 943 3311 for sales or assistance.]
The 220 will run off a fused 12volt supply - just like the older Icoms did. So less hassle there.
mikehallam