!. "How important is a GOOD Pin Pointer?". That's a tough question. GOOD as opposed to what? Not so good? Crappy? Maybe kinda good? Is there a difference between a GOOD pinpionter and a VERY GOOD pinpointer, that is the killer question, that'll get 'em goin' for sure. Good is an opinion, so it's a tough, ambiguous and provocative question, as might be asked by somebody trying to elicit popular opinion on a forum, say a Marketing professional. Your post is devilish. That's okay. It's a good question, just re-phrase the post title question, I recommend that you ask simply "How important is a Pin Pointer?". Period.
2. I see you know the importance of a pinpointer, perhaps you wish to let the members know what pinpointer(s) you use (have used), and why you feel that using one is important at all. Would you agree that using a pinpointer is so important that you might perhaps be happy just having any one model, even though it might not be GOOD, nor VERY GOOD?
3. "What is the difference between a $20 one vs a $120?". That's easy, "A hundred dollars".
4. Since you have handled bulky grip cheap ones, would you kindly list the models of the cheap ones you have used, in order to shed some light on your personal experiences with pinpointers, thus enabling the members to perhaps give some more meaningful advice?. Have you ever owned a GOOD one, and if so, did you find the exorbitant difference in price worth the extra burden on the wallet? If you had to bet, you could safely bet that a GOOD one is probably a little bit more important, and just as much gooder, no matter what, because good is better. Right?
5. This summer will be my 20 year detecting season and I aint never tried one or even seen one, GOOD or BAD. But I do agree, they are important.
6. Google Sunray Probes.