Either is fine, if you like KV flashing manually just avoid Slims, I have had friends who can flash them and friends who cant. I can't flash a KV on my slim never been able to. The best console I could recommend would be a Jasper JTAG or a Jasper RGH. If you like the Dual Nand/Triple Nand option you can get that too, I personally don't need it as I have one retail (my dad's flashed jasper retail, that im gonna sell), because I only ever mod 360s now because I got the Xbox One so I don't need a 360 for "legitimate gaming". If you need a console I can make you one