Hi!
The problem in general is that the comprehensible books are often not suited for quickly answering questions - due to their comprehensibility...
Also good are:
"Practical Organic Chemistry", Frederic George Mann, Bernard Charles Saunders; Longman Inc./NY(rather old, but often more detailed than "Vogel")
"Advanced Organic Synthesis (methods and techniques)", Richard Monson; Academic Press Inc./NY(the title speaks for itself; very practical, too)
"Lange's Handbook of Chemistry", Prof. John A. Dean; McGraw-Hill Inc./NY(the best amongst these three; over 1200 pages full of facts, also good for solving single, small problems without having to read hundreds of pages. And the best thing; it is here, somewhere at the hive ...)
And you should frequently check Java's new posts; thanks to him many good books are available as PDFs.
indole_amine