innodb or myisam for logging

[bharath venk]

HI,
we are using mysql for our ad network .we have some where around 6 -9 million impression per day and for logging purpose for every impression and clicks there is a row inserted . So I am thinking of using mysiam for logging purposes I think it would give better performance than innodb as no other operation happens other than inserts . selects happens only in slave for summarization of impressions and clicks. and also I heard Innodb would perfom quite well in computers which has good resources such as memory . our machines have 16-32 Gb ram which is quite good .. so I am little confused what to use . whether to use Innodb or myissam with delayed write . can pls suggest me what engine and what configuration to go for this purpose and how much difference would it make if we go the other way

Thanks in Advance,
Bharath