Magento installation

Hello everyone,

I need to install magento for a customer and apply a template to it.
I saw magento is available in QuickInstall, tried it and installs like a charm.
Problem is with the template that does not use a prefix in database tables as quickinstall does and there is not option to remove this.
Wanted your opinion on if it would be better to install magento from a tar.gz file downloaded from magento website, or prefer to use quick install and having to figure out a solution for database tables prefix.

Thanks