Paint selections when rehabbing?

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Howdy,

My wife and I are working on our first rehab and we have some questions about interior paint. Everything I've read about painting when it comes to rehabbing says use high quality paints. With that in mind I went down to Sherwin Williams and priced out their Duration and Super Paint. Even with their current promo their prices are running around $38/gallon or so. We are repainting the entire house (1400 hsqft) including the ceilings. Also the garage needs to be repainted which is about another 350 sqft or so.

From trolling various painting contractor forums that a lot of painting contractors use Sherwin Williams CoverMax for the ceilings and either ProMar400 or ProMar200 for the walls. The prices for such products are much more reasonable ($9, $16 and $18.50 per gallon).

I'm curious to what the rest of you guys choose (or what your painters use) for your rehabs. Our choices are Lowes, Home Depot and Sherwin Williams. There is a Ace Hardware but I'm not sure if they sell BM paints or not so lets just leave them out of the equation.

One last question about selecting the finishes. I was thinking flat for all the walls except for the bathrooms and kitchen. In the bathrooms and kitchen we are planning on textured the walls with knockdown and going over with probably an egshell or satin finish. We really want all the trim and doors to really pop so originally I was thinking gloss on the white trim. But now after doing some comparing of samples and this and that maybe we should go with semi-gloss on the trim because it is an older home (1975) that has seen several families and the gloss might show off any dents and dings in the trim more readily than semi-gloss. Also the semi-gloss should be a big enough contrast when layed over the flat walls.

So in recap ...

Walls = flat
Bathrooms/Kitchen = satin/eggshell
Trim = semi-gloss

Yah or nay?

Thanks.