suunto, t3 and t4 vs. t6

[ededit]

Suunto is coming out w/ less elaborate (and thus less expensive) watch next month. The t4 is backordered several places in the states. T6 has a number of features I don't need (or want), i.e. altimeter, temperature, barometic pressure), but it also offers the full training manager (the other two are training manager lite) and beat-by-beat recording intervals (the others do not). So, for those of you who have T6's, how important are the extras... i.e. would you 'settle' for the t4 or t3 or do you lose too much precision in merasurement by doing so?

Here's a comparision chart:

http://www.suunto.com/suunto/main/artic ... re=compare

To give an idea of price differences (u.s.)

t6 $319

t3 $170

and

t4 $200