I’ve been using the Accu-Chek Expert since Christmas. It has a few idiosyncracies in its setup (it’s the meter which offers pump-style bolus advice and is pretty close to the Combo handset). Once it is properly up and running though, and you’ve managed to tweak the settings to get it to give you good advice it can provide weeks of spectacularly good levels.
I *love* it.
Got it free from DSN as part of a Trial. There are a few freebies still knocking about I think.
Wrote a fairly nit picky review here: http://www.everydayupsanddowns.co.uk/2011/01/accu-chek-aviva-expert-review-one-month.html