The companies are quite different so it is hard to compare them as it is a step down in market cap, step up in valuation and a different business overall. We do think headwinds are building for Apple but if any company can figure it out, they are likely near the top of the list, so we also don't think it is an 'obvious' sell. Overall, we would not be opposed to trimming AAPL in favour of something with more growth potential and we like DSG, we just wouldn't really view them as similar in many ways.
Authors of this answer, directors, partners and/or officers of 5i Research and/or affiliated companies have a financial or other interest in AAPL.