What sort of files are you listing and what do call a good template?
I won’t claim to have a "nice design" but it suits my site. I’ve set up a very simple system, on my site I post a few articles and some of them have downloads specific to that article. So I have a simple listing in a side panel.
My filelister call is
<h3>Downloads:</h3>
[[!FileLister?
&path=`assets/downloads/[[*id]]/`
&showDownloads=`1`
&uniqueDownloads=`0`]]
[[+files]]
Then in the filelister properties I point the fileTpl property to a modified file chunk.
<div class="fd-file">
<img src="assets/templates/clanRev/filetypes/[[+extension]].png">
[[+link]]
<span class="fdexp-info"> ([[+filesize]] [[+showDownloads:notempty=`, [[+showDownloads]])`]]</span>
</div>
So if I create a new article, lets say it’s given a resource id of 63, then if I create a directory assets/downloads/63 then anything placed in that directory will automatically appear in the download listing for that page.
for example
http://cherryclan.com/scale7/workbench/sprungbuffers.html , see attached image.
Is that what you were after or are you trying to achieve something different?