There's not much you can really say about a rack. The important thing is that it's rock solid. The wheels are really good quality and it was really simple to put together. It's like a metal work DIY job when you get all the screws etc. I've got mine in my home studio and I have plenty of room for all of my gear in there. Highly recommended.
I own one SRK12 for my studio. Good quality steel. This piece are versatile and flexible in use. This are solid and professional looking. Easy to assemble and setup. Good value price/quality. I highly recommend.