The Zenith Daytona 16520 and 16528 have been quite hot on the market lately. While the early versions, such as the floating dial, porcelain dial and inverted 6 dial, are quite pricey now, the later versions are still worth getting as prices are more affordable.
The 16528 U series is a good choice as it is the last year Rolex produced its dials with tritium. Some late U series have luminova dials while early ones still have tritium dials. The 16528 is special as the three sub dials are more yellowish than its steel counterpart 16520. Patrizzi dials of 16520 with dark yellow or brown sub dials are very sort after. The sub dials on the 16528 give you a similar hue while the model carries a rather affordable price tag.
The correct tritium dial of the U 16528 should not have inverted 6 on the sub dial at 6 o clock and it should not have rounded numbers. Minute markings should be fat but not thin. It should have a MK5 bezel on which the letters of HOURS are closely spaced. (https://www.tapatalk.com/groups/vintagerolexforum/different-bezels-for-automatic-daytonas-t17026.html)
The correct bracelet of the 16528 should be the 78668 with solid end link. The end link code should be stamped inside the end link but not outside.
As steel watches are getting more and more expensive, the 16528 is actually getting more and more collectible given its relatively good prices compared to its steel counterpart.