Update SUSE 10.0 to SUSE 10.1

Hi all, In the past I had problems when updating an existing SUSE installation to a newer version (I think it was 8.0 to 8.3 back then). I therefore had to do a clean install, and then having to do all the setups for all the other things I had on the older version like Evolution. It is becoming quit a laborious exercise if there are a dozen or so stations to be updated. Is it advisable to update the present SUSE 10.0 systems to SUSE 10.1, and later to 10.2 in stead of each time a new install? Any experiences welcome. :-) Al