i really like the look and feel as well as the featureset of this app. still there's a few observations i have made and wanted to share here:
* the "recolour whole page immediately after every pressed key" preference appears to do the opposite of what it is supposed to do
* when you insert a word via autocompletion and place the cursor after the proposed word with the mouse without pressing enter, things start acting weird and unresponsive afterwards
* selecting a word in the autocomplete list doesn´t insert the word in some occasions (i haven´t yet been able to nail down the exact circumstances), and if would be nice to have to scrollwheel working in the list :-)
* indenting/unindenting seems a tad too laggy

that said i would love to see this application evolve into the best cocoa-freeware-editor there is! :-)