I prefer both. I use a Shearwater Perdix ai wrist mount and an Aqualung i300c as a backup console mount.
I think you will find you will look at your wrist first and it doesn’t matter what brand you have, it’s just natural to go to your wrist first then your console/backup.
As far as pro’s and cons go.
Wrist mount pro: it is compact, goes where your arm goes doesn’t hang, is convenient and easy to see and get to.
Wrist mount con: Can’t think of any other than straps or surgical tubing. Be cognizant that if the straps break you could lose your computer.
Console mount pro: it is directly attached via hose to a SPG your compass, SPG and dive computer are in a console and are convenient to look at. Cost of this system is typically lower than a wrist mounted computer.
Console mount con: it is attached via hose. Usually either hanging down while diving or stowed in a BCD pocket, can be hard to get to and can be a reef hazard if left unattended. The hose can be cut and cause an bailout issue although very rare.
I’m sure there are more and really at the end of the day my opinion is this. Old technology works, is inexpensive and is usable in today’s environment as it has been proven from years of use in the diving community. Wrist mounted computers are a “newer” technology as is air integration. The expense of the newer technology is usually more expensive but can be had on a budget, but you need to do some homework.
I use old and new and find that I look at my wrist very prominently vs the console. I like redundancy but some folks don’t.
Hope this helps somewhat.
Good luck
Glenn