Depends what tasks you want to automate to free up your time a little?
We have started using
Avangate's CuteRank to check our clients positions each morning because it seems to give correct ranking positions (something a lot don't always seem to do these days) and it was well priced for unlimited clients! (also free just for single site use)
And we use seomoz to keep an eye on on-site changes etc as we have a paid account with them.
I think that's about all the tools we use to automate bits like that as that's all that's need and then we have some custom templates in word for clients monthly reports which draw data from analytics so all we have left to do is a quite summery of what has been done for the month and any changes in traffic, ranks, bounce rates, conversion etc.
We use to use AWR, and it was very good, but CuteRank is much cheaper ($59 + $10/year for the updates) which is much cheaper the AWR
AWR on the other hand does have a few more options to see past positions side by side, where as CR only displays a single days change (customisable though) in the program, but you can export different reports which can be set to show more detailed past rankings.
I would advice having a look at both CuteRank and Advanced Web Ranking to see which you like best and which meats all your needs, but IMO, if its just rankings you want to watch, CR is fine for the job and cost less to keep up to date.
You might also want to have a read of this article
http://www.seomoz.org/blog/crawler-f...screaming-frog which is about xenu and screaming frog, which are tools for crawling websites to look for broken links etc, these can be very handy!
For example, we use xenu to crawl large client sites to check for old products which aren't sold any more so we can A) change the links on the site, and B) redirect the old url to a relevant product.