I always liked his character and also the actor as well . When he was casted I was really happy and shocked we got a good actor to play the captain !!
Apart from been IMO a good actor he played his character very well he never backed down or sometimes didn't follow orders to the latter. Never understood his big grudge with the vulcans it was explained but he always seemed bitter.
If Enterprise had lasted 7 seasons I'd loved to see archer promoted and seen him helping to sign the treaty that forged the federation.