Has anyone had one of these, or similar: http://www.bumpsmaternity.com/item.php?prodKey=YEJ00700&level1Key=1&level2Key=4&level3Key=9&pageKey=3&PHPSESSID=2c8174a2dc133049ca8e4d2f6450daf3 Are they any good - I feel like I need a wheelbarrow to push my bump round in so wondered if this would be a better option.