Muster said in his latest investment note that he believes Apple Mac's now account for 21 per cent in the US consumer market, adding that he expects it to continue to grow for the foreseeable future.
He also noted that it isn't just in the US that Apple is breaking new ground, with him saying he believes Apple has broken the ten per cent barrier in worldwide for the first time too.
Munster cited the change in Apple's prospects came after it shifted to Intel-based Macs with sales increasing by 37 per cent during the first year – more double the PC industry's average growth rate of 15 per cent.
He also confirm the belief that Macs are more expensive than equivalent PCs. However, he said that while consumers often believe they are around 20 to 30 per cent more expensive, they are actually more often 16 per cent more expensive for desktops and just nine per cent for laptops.