Mesh are what DM could have been if they'd kept evolving after "Violator." I grew up on DM and will continue to follow them for as long as they keep making music, but while they're still better than most of their imitators, their recent work doesn't hold a candle to Mesh's "Who Watches Over Me?" or "We Colllide."
I'm a great dM fan, but I'd NEVER call them an imitation band - first: it's too difficult to imitate dM, second: it's just totally different. I bet those who claim these two bands are similar have heard "Enjoy the Silence" and maybe "Freelove" only ;-)