Not quite sure what you mean about adjusting - but if you mean programming zones and setting alarms, I think it's a lot easier to do that when you're not in the middle of a workout. Some watches let you do it on your computer and sync it to the watch, others you have to do on the watch itself.
FWIW, a lot of people report problems with the new "premium" Garmin soft strap. I have the older "hard" strap and don't find it uncomfortable at all. I sometimes get a tiny bit of chafing under the clips on long runs, but not enough or often enough that I consider it a problem, and never on the bike. The strap I have, the battery is under one of those eighth-turn covers that you open with a coin. Not sure about the soft strap, but I believe you have to unscrew a cover to get to the battery in that one.
Whatever you go with, when it comes time to replace the battery, get a medical-grade one, they last about three times as long as the regular batteries that are supplied with the straps.
ETA: not sure why you're replacing your Sigma either - but if it's just that you can't find the manual, here's a link from their German site (in English) (thanks Google).
Last edited by OakLeaf; 03-24-2010 at 10:26 AM.
Speed comes from what you put behind you. - Judi Ketteler