i will rate it like this
Mips boxes
Xtrend , Vu+ Dreambox, Gigablue,
Xtrend all the way for me.
ST40 boxes, IPbox, Vantage, Fortis boxes liek Octagon, IceCrypt, Spiderbox
For me IPbox and Vantage are top noch in picture
I use Ultimo 2xdvb-s2 and Xtrend 9500 HD daily but for me seems like Xtrend is a better box in Quality build.
If i could i will have any day a IPbox if the software was a bitt better and some more support.