You will likely get 200000000000000000000000000 different responses to this question. It's more important to get what you want. There are several things to consider, recoil, ammo availability, accuracy, and so on.

I have a 7mm in a Rem 700 BDL and honestly haven't hunted with it, my brother used it for a few years but I have never hunted with it. I really didn't find it enjoyable to hunt with (recoil-wise) and there is limited bullet availability in the 7mm (.284) cal. That being said, the recoil isn't that terrible, just more than I really like. If bullet options are something that concerns you I'd look elsewhere. I have never shot a 7mm-08 but have always wanted one, have heard great things about them and they have less recoil but are still the same cal (.284) so again limited bullet availability.

I prefer the .308 and the .270 cal's myself for deer hunting and mostly use a .270 win or a 270 WSM for the past several years. Highly accurate, reasonable recoil, better bullet availability than the 7mm (more factory ammo options as well in most stores and the .270 Win ammo is cheaper than 7mm...while the 270 WSM ammo is as spendy as the 7mm).

Again...I could write for hours on the plus's and minuses of many calibers...I have a safe full of options many wouldn't consider god deer calibers that have taken many animal for me over the years and I enjoy having a wide variety of choices. If you are interested in the 7mm (.284) cal I would also recommend you also look at the 7mm WSM...very impressive stats and ammo is in the same price range as the 7mm Rem Mag...I personally would choose the 7mm-08 of the options you have provided though as they seem to be more accurate according to reports. I haven't found my 7mm Mag to be an extremely accurate rifle beyond 200 yards and it has a Rem Custom Shop barrel on it...just my 3 cents worth. I am done rambling now.