Changing my C5

[V8 ETE]

I am going to change my 2000 coupe C5.
With the C6 becoming available soon, should I purchase a C5 convertible (possible better residual value in 2 years)or stick with a coupe.
I mention 2 years as I would not trust the C6 until it has been produced for 2 years, so any problems are sorted.
However my current C5 is a bit too old, and I also have concerns as to whether C5 convertibles leak so
anyone have any thoughts on this matter.

[V8 ETE]

C5ragtop
I actually prefer the look of the roofline on the convertible and Zo6, the coupe back window sometimes looks odd.
Does the convertible have decent boot space, and is the roof electrically operated and if not how easy is it to use?
thx