I agree, Carter Hall is a decent OTC pipe tobacco that is basic and offers nothing impressive other than a decent basic smoke that doesn't "bite" badly.
Bite. That is the key quality of a decent smoke and one that is poor and undesirable. A good pipe smoke should never bite.
Really good smokes have flavors that are rich and interesting and that develop in the bowl while you smoke them. They can be either mild or strong in their nicotine punch, but that is something totally separate from their "bite". Uneducated pipe smokers often confuse "bite" with the strength of the tobacco. This is wrong. Good tobacco does not bite at all. It may be very strong, or very mild. The "bite" has nothing to do with this. "Bite" is the burning acidic effect that drawing the pipe has in your mouth. It hurts. It feels like you are burning holes into your tongue. Good tobacco will not do this to you. Good tobacco will only leave you with flavor, smoke, and aroma that is appropriate for that type of tobacco. Tongue burn, feelings of pain, and any unpleasant experience is the result of inferior poor quality tobacco.
Tobacco smoking via a tobacco pipe is one of the only ways that anyone can truly enjoy tobacco smoking without threat of destroying their health. If done responsibly, you can know and learn the qualities of fine tobacco. Something that cigarette smoking will never reveal. Cigarette smoking is irresponsible and arcane. It's like sucking up mud into your lungs. Common sense tells you this is dumb. Why do it? Pipe smokers never inhale the smoke. There is a reason why pipe smokers don't do this. Mostly, because it's dumb. More importantly, you can't taste the quality of the tobacco once you do inhale it.
Cigarettes are meant to be inhaled deeply. Tobacco pipes are meant to be tasted. Never inhaled. It is little wonder that pipe smokers live for so long when compared to cigarette smokers.
If you want to appreciate tobacco for what tobacco can be, smoke a pipe. Pipe smokers only smoke the best tobaccos. If you want to choke on smoke and die early, take up cigarettes. Cigarettes encourage deep breathing the smoke and they mix other chemicals into the tobacco to make it more "desirable". It's not pure tobacco anymore.