BB is the only one of these three that I've seen all of. The episodes of The Sopranos and The Wire that I have seen have been good though and I've enjoyed them. I never though GoT would have been for me as that sort of thing really isn't to my tastes, but I've really got into since they started showing it from the start on Sky.
BB, never seen the sopranos and the I found the wire boring as ****
How many wire episodes did you watch? It gets really good but you need to stick at it. I also was a bit confused at first, as they threw you so many characters at the start and you couldn't really understand what was going on and who was who but i eventually grew to love it.
Also anyone got any recommendations for the next best series to watch? Something similar to any of the above would be good.
There's not many out there that can really compete with those three, in terms of offering top quality in every department. The two I'd suggest are Mad Men and House of Cards. Otherwise, try out some anime if you want some great characters and story-lines.