I use Sashimi, it can do everything that UC can... it's easier in some areas, a little more difficult in others.

To install a set of .cabs, you just put them in \Storage Card\SASHIMI\Auto\CAB

When Sashimi is run then, it will go through the list of .cab files in that folder, and install them - alphabetically. If certain programs require special prompts (like Skyfire, for example) the install will pause, allow you to choose any options you may need, and it will automatically continue. You also, if you so choose, can set it up to run through those options for you, so it never has to pause. I've found this is just a big hassle to set up though.

Sashimi can copy files. Again - \Storage Card\SASHIMI\Auto\Root\...

The root folder is essentially an image of your phone's root folder... so if you want a file called secret.txt in My Documents, after a resest, you would place a copy of the file in...

\Storage Card\SASHIMI\Auto\Root\My Documents\secret.txt

And it will be copied when sashimi is run. Sashimi can delete files as well (though, I'll admit this is easier in UC), and it can install .reg files automatically. It can use provxml files to set up things like e-mail accounts, and even has a program to generate the .xml files for you.

It's considerably better than UC... but I still feel as if many improvements could be made.

The whole UI could be re-worked to be much more smooth and fast - and more intuitive. Sashimi creates a bunch of junk entries in your start menu list, and it's just a hassle to make a file to have them removed. Also, once the auto install is done, it will give you 10 seconds to say yes to soft resetting, otherwise it defaults to NO. It would be nice to change a setting to have it default to yes, this way I can just have it run and take care of everything.