"Nothing wrong, except that your ideas are somewhat radical"

[arjun78]

Or:

Nothing wrong, except your ideas are somewhat radical. (2)

Which is accurate? And if both of them are, which one sounds better? For me, it's (2) because it sounds better without an additional word 'that.' But I am wondering whether 'that' may be necessary in this context.

 

[Dimcl]

Either one can be used - it's simply a matter of style and how formal your text is. I, personally, would use "that". Without "that", the sentence is more informal and casual.