Shifting speeds?

[markboy]

I'm sure I'll get plenty of different answers here but...

Assuming you are riding on a level surface, at approximately what speeds are you shifting through the gears? I'm going by feel right now as I have not added an aftermarket tach (and after looking at the cost don't really want to). So I thought I would turn to the folks here to get some feedback. As a starting point, I saw the following on another forum. The speeds look a bit high to me but here they are....

1st -24 mph
2nd -38 mph
3rd - 51 mph
4th - 65 mph
5th - 88+ mph

Note - I'm not looking for the max speed or 'red line' to push each gear through but rather the optimal point to shift.