It will feel like some one is pushing on your teeth. The brackets stick out a bit from your teeth making it feel like you have a full mouth of metal, big lips and your bracket may rub against your lips feeling again like a metal file.
While some breeds may be more suitable than others for a beginner rider, there are always exceptions to the rule. Quarter Horses often make great beginner horses because of their even temperament, but some can be quite hot or energetic for a beginner.
Secretariat was the fastest horse ever, & since the topic is The best race horses of all time, common sense tells me that the fastest is the best. Secretariat. OMG SEcretariat is the best he beat man o war's record seattle slew's even riffian, barbaro, and even zenyatta.