[bouncingsoul]

Well, my main suggestion was to use the tools that satisfy the needs you have. Spotlight app launching is fast enough for me. Maybe someday with a larger index it won't be, but that isn't the case right now.

I've never encountered an mkv file, so that Perian doesn't add support for it doesn't bother me.

If Spotlight is slow for you and you need to play mkv files then use the tools you need. But I don't think it's necessary to recommend an M24 tank because it can handle off-road and take out enemy road blocks to someone who'd be perfectly satisfied with a normal sedan for their morning commute.