I would recommend InnoDB because it is ACID compliant , thus very
needed for your site (you want to implement all-or-nothing bank-style
behaviour right?).

However, I noticed that InnoDB tables get a bit slower than MyISAM
tables during bulk-inserts ,especially of TEXT/Blobs and Varchars. It
is all relative. It depends what fields you want to store, how many
writes / reads and so on.

However, InnoDB is not the universal solution to any solution. You will
probably end-up using both types, especially if you write some log
information, which is not of critical importance.
Hope it helps.




Dragomir Stanchev
http://www.linkedin.com/in/dragomirstanchev
http://www.student.informatik.tu-dar...%20deutsch.pdf