I have worn these during regular daily activities, lifting and running.  They are extremely comfortable.  My only complaint is that I only have one pair and need more!  I have tried wearing a similar product made by Reebok and I thought they were okay until I tried these.  I couldn't ask for more out of a product like this.  They don't ride up for me(everyone's body is different so I don't question other reviewers when they say it happened to them).  They keep me feeling dry, even on long runs and I haven't noticed even the slightest bit of chaffing.  They have the front opening which is convenient.  I also think they look pretty cool and seem to be made to last.  I went with the 6 inch pair, because they seem to be most similar to boxer briefs which I prefer. Yes they are kind of expensive, but in my opinion they've proven to be worth every penny.