That is what started to happen to me Pucky. I have had to almost quit beer entirely as well because of vicious day long incapacitating hangovers... I now stick to mostly Potato or Corn Vodka, Rum and Tequila.
There is an amazing potato vodka that comes out of PEI, Pucky. I am sure you can get it out there but the LCBO here in Ontario does not stock it.
http://www.princeedwarddistillery.com/home.php?page=productpotato
All I can say is to try it a few times and compare it to what your 'usual' hangover is like.
If you can find Luksusowa Vodka, it is also Potato based and is priced at just under $40 for a 40oz bottle.
Rum is made from Sugar and Tequila is from agave... Neither of these make me hurt either.