Although the guys from New York released a lot of live stuff during the years, this EP recorded at the famous Marquee Club during their first ever European tour is still (and will most likely ever be) my favourite DT live album.
It may not be as polished and technically overwhelming as the later DT live releases, but that's one reason why I like it so much. Another reason is the performance of James LaBrie - to my knowledge this is the best live performance of him ever recorded.
Besides that, every single one of them is giving his very best and all adds up to a stunning piece of live work and 47 minutes of pure energy.