Piper Jaffray analyst Gene Munster maintains a bullish outlook on Apple's business performance.

In a recent client note, the analyst points out that iPods now hold the entire Amazon US top ten sales slots and 12 of the top 20 computers sold through Amazon US are Macs. He calls this an "all-time high".

Munster also notes that build times for 15-inch combo drive PowerBooks and 2.7GHz Power Mac G5s have slipped, suggesting Apple may be winding down production of these models.

The 20GB iPod is Amazon US' "top-selling" electronic product, he notes. This performance is also reflected in the UK, where the 20GB iPod is at the present time the top-selling item in the top 100 electronics and photo sales list (updated hourly).