I've dealt with a number of suppliers in the past, most of them in the UK, and I have to say I've never had a bad experience. People such as Dave Milbourn (FLJ on this forum), Malcolm Reade, George Sitek, Westbourne Models, Redbank Models and Jackie and Lawrie White at Model Slipway have all given outstanding service. I have no hesitation whatsoever in recommending any of them.
I have also dealt frequently with Tower Hobbies in the USA and found them to be excellent, too.
Peter.