Oh yeah I heard about mkt about a week ago, seems to be a nice piece of work
Quote: "- Improved mixer, improved FT2 effect compatibility (especially tremolo, tremor, vibrato)
- Scopes (finally) (only for Desktop versions)
- Configurable colors (config->layout)
- Disk writer (Ctrl+R)
- FT2 like pattern follow: cursor line always in center center
- Prospective mode and toggle follow song mode
- Volume scale (Shift/Alt/Ctrl+V like FT2)
- Load GUS patches (needs to be loaded as instrument)
- Load every file as sample (good for making noise samples)
- Dozens of sample filters
- Reworked GUI (especially menus)
- Sample offset can be shown in sample editor
- Drawing samples (but remember to turn on looping, otherwise doesn't sound good

)
- Toggle Hex count for rows in pattern editor
- Show zero effect as 00 instead of dots (see config->layout)
- Improved Protracker 2.x, 3.x replay modes (see options)
- Skip through song while it's playing (with cursor keys or scrollwheel)
- Time length calculation/play time meter
- Peak meters
- Sequencer button (see order list)
- Hold the Alt Key in the sample editor to move entire loop not only loop/end
- Tons of other fixes... "
I've found myself using trackers for very specfic cases when there's something I just can't do in Reason.. generally speaking, when I've got a very complex drumbeat I'm trying to create (i.e. jungle) They're also bloody useful for making breakbeats.
At any rate, if you don't want to chip out $400-800 for a *good* setup (and by that I mean cubase, reason, etc.), trackers are the way to go

I am but mad north north-west; when the wind is southerly I know a hawk from a handsaw - Hamlet, Hamlet