I actually experienced this dilemma yesterday.
I typically only smoke once a week on Sundays. So I typically grab something I like and know I will enjoy. Then when my wife is out of town and I smoke a little more, I try cigars I keep in my misc. box. That way if I don't like them, I can pitch them and try another one an hour later.
Yesterday, I decided to go against my rule and try a 601 green label habano oscuro la punta I picked up a couple of weeks ago. I had the 601 blue label maduro a while back and it wasn't bad. I had been wanting to try another 601 for some time, so I decided to grab this one.
That is the last time I go against my rule. :hn This cigar was a little too full for me and very rough. I really wanted to get through this one, but after 1/2 an inch I couldn't take it anymore and did not want to ruin my chance to smoke a cigar I would actually enjoy.
I put it out and went in to grab another one. Unfortunately, it took me half way through the second cigar to finally get the taste of the 601 out of my mouth. It ruined my smoking experience for Sunday.
I have one more in a different size, so hopefully it will be better. Unfortunately, it is going to have to wait until my wife goes out of town for business before it gets smoked.