Easy question....

I've had Diet Pepsi and it taste like a chemistry lab experiment gone bad. 
Regular Pepsi is too sweet.
The rest of the Pepsi family is (in the House of Schro) not allowed.

Yesterday I had a regular Coke for the first time in years.....

I'm a big time Coke Zero guy.

What say you?

For various reasons I had to adjust and learn to drink Diet Coke when I drink soft drinks several years ago.  I've gotten used to it.  I tried Pepsi, just too sweet, and if the old gray cells tell me true, the disaster of New Coke was driven by a perception that the public wanted the sweeter flavor of Pepsi--hence Classic Coke that corrected that disaster in marketing. My wife does most of the buying for the house, and she's stuck on either diet or regular Coke.  I've had a couple of Zero's and it's not bad.  Just can't get the wife to change.  
But I know that soft drinks taken as a whole aren't the healthy choice, but I'll have one diet coke or so a week tops.  But my guilty obsession is regular Coke during Passover, they make a Kosher for Passover bottle--it has a yellow cap and is sold with the other Kosher for Passover foods.  It's made w/ cane sugar rather than high fructose corn syrup that is the usual non-diet sweetener, and I swear you can tell the difference--spicier, richer flavor.  

Prefer Diet Coke, however I can drink any soft drink as long as its diet.

If I drink regular I get a bitch of a headache 

I'll vote for Diet Dr Pepper.

My mom drinks alot of Diet Coke. I don't drink alot of pop, unless I go to a restraunt in that case I'll order Root Beer. If I'm just at a gas station I'll get Vitamin Water or Gatorade.

Hardly ever drink soda, never diet hate the taste. Prefere ice tea,beer,wine,juice,and sometimes H2O.

Used to drink gallons of diet Pepsi.  Now, thanfully I have replaced that with gallons of good old H2O.

I rarely drink sodas,,,,, maybe 5 or 6 a year..... but when I do I like Dr. Pepper.