If you’re after the best affordable bookshelf speakers on the market, it’s hard to avoid the Bowers & Wilkins 600 Series. This range is home to two of your prime choices: the B&W 607 (£399) and their chunkier, pricier siblings, the B&W 606 (£549). This duo has so much in common - visually and in terms of engineering - that choosing the right pair for you isn’t straightforward.