I have one ,The bottom two speakers are ported & the top one is sealed ,I find it really easy to pull around , My RM 2 sits well on top ,My ABM also very stable sat on top but can look a bit odd / different ,I decide if I like it or not ,But the sound is fantastic ,I'm 6ft3 & it's the best set up I've had for near side monitoring , Personally I like a one cab solution for easy setting up & one less trip to the van ,I find it a lot easier to move than my old barefaced super 12t ,that was a lot lighter but I found it a lot more awkward to due to the handles & having to bend over if trying to use the wheels .