I do a little flipping back and forth but I probably spend more time on the NFL Network. If I could only watch one, it would be a pretty easy choice to go with NFLN.
If you just look at the annoyance factor, it is no contest for me... Berman and his little sidekick Tom Jackson just annoy the hell out of me (I used to love them both but they are such jerks towards the Cowboys now that I can't stand them). Kiper is ok and I do like to hear what he has to say on our picks, but I also want to hear what Mayock says.
Ultimately, I always end up watching NFLN and recording ESPN. Then, later I simply fast forward the four letter network until our pick and slow down to listen what Kiper says about our picks, or anything else that grabs my attention.
Man, I do love the draft. May is a long time away!