If you are looking to produce anything for a European market, it' going to be a big issue in about 5-8 years as all TV will start to go to a 16:9 standard. This is already the case with digital and digital cable channels in the UK.(posted 8080 days ago)In the meantime, there is no point unless you actually prefer the 16:9 frame and want to use it so hold on.
I shoot now with a "super 35" head on - and consider two overlapping frames: one for academy, and within that a masked 16:9 image. I prefer the 16:9 ratio myself, but it's too much money.