Hi, let me try and lets hope others will join.
My appraise is only for the domain and not the content/website
+ = positive/good for value
- = negative/bad for value
talktosupport
+ .com, co.uk and .net
+ PR3 (this only effect my appraise of the value tiny tiny tiny bit)
+ easy to remember, pronounce and spell
+ the words flow well together in pronounciation and sounds good.
- three words, "to" in the middle
+ brandable (talk... to support, imo

)
- Low search volume in Google for the term "talk to support"
- no advertiser competition for the term "talk to support"
- non/very low keyword value
+ good Google search result for the term "talk to support"
Appraise: .com = mid-high $xxx ; bundle = high $xxx
Best regards,