All of your options are great, if your looking to do some customizing down the road, the model 700 is the way to go. Tikka and Savage both, aren't far off either. I honestly don't think you can go wrong with any one of those 3. Ive owned all 3 at one point, (not all 243) but they all shot SUB MOA with my handloads.
Check out prophet river in Lloydminster AB. (theyre a supporter of this site as well) They have lots of stocks and aftermarket toys for firearms, but also have a pile of rifles in stock, and their prices are on par with others.
Prairie Gun Traders in Avonlea, SK. They also support this site, and Darren and his crew are top notch to deal with as well.
Wolverine Supplies in Virden, MB. They support this site, have piles of options for everything from firearms to chassis's, stocks etc. Very good customer service as well.