12" and 14" cutoff saws in table top and portable models by Makita, DeWalt, Bosch, Hitachi, and Porter Cable.  Frankly, we perceive the difference between cutoff brands to be negligible.  Our advice is to first examine the clamping methods.  Next, determine your power needs.  Now decide if you need to miter.  Lastly, choose the safety features and extras, such as laser sighting, that complete your ideal cutoff.  Once you've determined all the features you want, you're ready to pick by brand or price.