I have a neighbour that now lives in AB that has bought heifers and bulls from Anderson's. He has been very happy with them. They are on my list of potential suppliers.
28W is a good bull, but probably more than you want to spend. 108W is a powerhouse. 39W is good, although I would want to see him in person, due to the twisted look of his testicles in the picture.
I hate to say any of those bulls are poor, because in reality, anyone of those bulls would be alright if your looking to producing powerful females, as Anderson's don't keep any "poor" cows. I have been told by different people that they have one of those cowherds that you 'must see' in your travels.