I just got back from a trip to Tucson (175 miles one way) from where I live in southeast Arizona. Spent some time driving around Tucson as well.
Never was bothered too much by X band alerts (A) mode.
Hit several K band alerts with plenty of warning time. But what really suprpised me was the number of Ka band alerts coming back from Tucson heading east on I-10. My V1 alerted me with enough warning time on all occasions. This was either straight on or from straight behind. - No hills or curves.
No ghosting or J alerts at all.