I always found it quite disgusting (in Whitbread's time, advertised by the real ale twats), it induced a headache while I was drinking it. Generally some versions of Trophy and Brickwood's Best* were much nicer to me.
*pre- Pompey Royal days only.
I thought Chiswick tasted of fried onions, Hock on the other hand was splendid.
Fried Onions? Bloody hell.
"Everybody's got to believe in something. I believe I'll have another beer."
-W.C.Fields