For the British Buffy fans, who had the better accent, Alexis Denisoff or James Marsters?

I am terrible with accents but for years I had no idea that Alexis and James who played Wesley and Spike in Buffy and Angel respectively were not in fact British. I remember specifically the first time i heard Alexis talk outside of the show I was blown away. I'm curious to know how good their accents were to people who are more aware of that sort of thing? Are they so good that some of you were fooled or just solid accents or do some of you actually think they were bad? Also, which or the two were better accent wise?

*edit, sorry all I've been informed this question has been spammed multiple times across this subreddit I think it probably should have been obvious to me lol but thanks for the response regardless!