Don't spend more on a trailer than you really need to. I purchased the $100 Walmart ones and they do exactly what they're suppose to. If you're not trying to race along at 30 MPH, then all the fanciness of higher-end trailers is moot.

They all have safety features built in, but at the end of the day, its still just a metal frame with wheels. I put a reflective triangle on the back of mine and have two cherry bombs, one on each rear corner. I keep the rain cover in the back and let my son and daughter enjoy the sunlight and fresh air.