I love my Vyper. Reliable, easy to read. You can change the batteries yourself. Data cable for PC transfer is great time saver. I've got hundreds of dives on mine.
Suunto has a reputation for being conservative. That's fine by me. I want to go home at the end of the day with all my parts working. Why increase your risk for an extra 3 minutes of bottom time?
I also love my ZOOP, and I found a cable for it for only $7 to transfer my data on taobao.com ( Suunto ZOOP DZˮµçÄÔ DIY Êý¾ÝÏß Á¬½ÓÏß-ÌÔ±¦Íø ), I can help with a purchase if anyone needs one... I also have an old Suunto console computer, it runs in psi is it's only weakness, but I love it because it keeps a running track of my dive time to when I need to make my safety stop.