I choose the Buccaneer for my preference, as to which is the better aircraft though, I don't know enough about the A-6 to make an informed decision.
Here's a few Buccaneer bullet points for people who might be interested.
* The Buccaneer design evolved from an unsuccessful tender to built an all weather fighter for the RN, the winning design was the DH Sea Vixen.
* It was the first area ruled design to be produced in the UK, hence the rather obvious 'coke bottle' fuselage.
* Much of its development was funded by the US mutual aid programme and the USN seriously considered buying it. Why they chose not to is something I am currently researching.
* The max payload it could carry was 16,000lb, similar to a standard Lancaster. 4,000lb internally. (what is the load of the A-6?)
* It was the last UK bomber to enter service with an internal bomb bay (until the F-35B arrives)
* It entered service with the RN in 1962 but not with the RAF (who didn't really want it) until 1970, when it was to be retired the RAF were loathe to part with it.
* At very low level it was faster than both the F-111 and the Tornado (which replaced it)
* During the Gulf War in 1991 the Bucc was required to illuminate targets for the LGB's of RAF Tornadoes which could not do it for themselves.
A supersonic version of the Buccaneer was offered to the RAF several times - they declined it because it was a Navy bird and they wanted TSR 2 - They ended up getting the standard navy bird anyway - fortunately it was excellent.
* One of my favourite ever sights was TV footage of a Buccaneer manouvering wildy almost on the desert floor during red flag 77 accompanied by a very excited and impressed commentary from a US military controller, made you proud to be British!