I also have the rmp1scratch and rmx30 from dj whore house. Build quality is great, although cause the cdjs are rubber coated, mine have some scratch marks from the side of the mixer. Feature wise: rmp1 - no midi - no usb - no effects but the platter is responsive and solid and I can see them lasting long term. auto bpm is inaccurate but you shouldn't be using that anyway. If you go, 1track -> 1 cd, you can store cue points/loops for up to 1000 cds in its memory. The mixer has no effects either. But the faders are well built yet VERY light and responsive. You can adjust the curves on all faders including the cross. Sound quality is great. Overall I think your choice would come down to. Do you get the dj warehouse pack. Or hunt online for something slightly better with more features, but obviously used. Would I buy them again? Yes