I just picked up a 2x4 tent about 2 weeks ago. I had gotten a 250w hps the week before and ordered a 2x2 tent but for some reason when I went to pick it up it was a 2x4. So he gave it to me for the same price as the 2x2. The 250 does ok in it. But I would honestly go with a 400 in it if I had a choice. I guess it depends what ya wanna do in it. I have only been planning 2 DWC buckets so ill just have some extra room in there.