Think of a Linkage this way. If you go to a bar and meet a girl/guy and you spend two hours trying to get that number but find out that they have a girlfriend/boyfriend and they are in the bathroom. After you bought them 5 drinks.
No but seriously, Dont go to a post bac just for the linkage. I was going to go to UVM post bac. Not well known but they had a linkage to UVM and New England School of Medicine. I then looked at the price of all linkage programs vs. non linkage programs and figured out thats what your are paying for. The UVM linkage has had very very few people get into UVM.
Go where you will get the best grades and save the most money. Just my 5 dollars worth.