Mini and lag?

I am thinking about getting a Mini to replace my Premier, which is to me is extreme slow doing anything. I have a Roamio which is 10 times faster and more reliable than my premier is. Couple of questions.



1. When changing chennels is their a lot of lag time?

2. I lose 1 turner from my Roamio correct?

3. I can just hook it up to my Ethernet Network on Comcast?

4. Menus etc are they fast and fluid or slow as hell like the premier?

5. No cable card, but does that mean I will not get On Demand stuff?



I have a change to get a mini for $60 is why I am thinking of doing it.



Thanks