I have not heard anything negative about the magazine.
Poetry is one of the most respected literary magazines in the country. They've been around since 1912 and they've published many of the major poets of the 20th century. It's not an easy market to break into. According to Poet's Market, they receive 90,000 submissions per year.
I sent them a poem about a year ago and it was rejected.
Are there any specific concerns you have about Poetry?
Jackie