My experience with e-tools has been entirely negative. The program is expensive, cumbersome and laggy to run, not customizable, and buggy. It is usable, and I did use it for months, but there are better programs out there and they cost less. One of the best programs out there is DMGenie and I highly recommend you try it (if you haven't already) before you invest tons of money in E-tools. DMGenie provides a 60day free trial so you'll you can try it out without shelling out cash immediately. DMGenie is much less expensive than e-tools (30 dollars) once you consider all of the data sets you have to buy. Also it is entirely customizable (which can be done easily with the help of the yahoo group found on the links page) and adaptable, easy to use, and can do everything. You can run an entire campaign with it once you learn how to use all the features. The only slight negative to this program is that it does take awhile to learn because of the number of features and everything it can do, but if you use the tutorials, FAQ's, etc, you should be able to learn it quickly.
I wouldn't touch e-tools with a ten-foot pole now, and deeply regret that I ever bought it in the first place. DMGenie is worth 30 bucks; E-tools isn't worth the time it will take you to nagivate their user-unfriendly site and drop the program into your shopping cart.
,Dracael