actually: I do like Opera 15. Not for my personal daily use (still 12.15 because of tab stacking), but it’s the first opera version i can recomment to “normal” (non-hardcore) users.
Opera 16 will bring some much-needed features back, I especially welcome having duckduckgo as a search engine again.
All in all: the switch to blink was a little late, Opera ought have switched to webkit with version 10… but better late then never!
(i used to have Opera Mail/M2 for my mails for 5 years but I really got used to thunderbird quite fast. Didn’t imagine that could happen ;-P).