I picked up a cheap used Series 7 on eBay a few months ago, but the battery is not cutting it. Went for an hour's walk today starting with 100% charge, down to 55% when I got back. The Ultra is probably more than I need, but the Series 9 would be a decent upgrade, maybe worth it for the battery life. And the instalment plan wouldn't work out too much a month. Its tempting.