I have kept a simple brew regime. The v60 for a short steep and Clever for a long steep, which is usually 30 mins - 45 mins.
While @MWJB will advise you on your brews, I think the different strength levels between Orea and Clever are because the latter requires a long steep of at least 20 mins or more. This will also allow you to grind finer for Clever.
IMO, if you want a good comparison, you might pick up a V60.