Combo Lathe/Mill Vs. Lathe and Mill

[Fox]

Hi,

I would like to have an advice on whether to buy a combo lathe/mill or one lathe and onw mill. I was looking for the Grizzly G4015Z Combo Lathe/Mill (http://www.grizzly.com/products/G4015Z or http://www.grizzly.com/products/G0516), but I am not sure about the combo thing. My budget is around 1-1.5K. Am I better with one mini-lathe (http://www.grizzly.com/products/G8688) and one mini-mill (http://www.grizzly.com/products/G8689)? My concern is more on precision, ruggedness, reliability, etc.

I took Grizzly for comparison purposes.

Thank you for your answers