I'm in the same position as you are Ayla...
Should I buy the i62HD now, or should I wait for some reviews on the firefly before deciding? But at ereader-store.de the i62HD is sold at a 'Reduced price just for a short time', which can mean three things:
a) in a few weeks the price will go up once again, and there won't be much price difference between the 'regular' i62HD and the FireFly (which seems unlikely), and in that case the waiting has cost me money (if I decide for the regular i62HD)
b) the price is reduced now and will stay at the same reduced level once the FireFly is there.
c) the i62HD is almost out of stock, and the remainder is sold at a reduced price. And once the FireFly is there, it won't be sold anymore.
If c) is the case, and I want a 'regular' one, I shouldn't wait to decide...
Still, the FireFly is tempting... But I read somewhere, that although the illuminated eInk devices are frontlit, they still are more straining for the eyes, because the light still comes in your eyes... I don't know what to think about that... After all, we SEE because light comes into our eyes, even if the light is reflected on paper/eInk/whatever.
If I were you, I should just decide for the i62HD or the FireFly... Of course, you can wait for yet another version, but there will always been something to wait for, and whatever you buy, there will be something 'newer' soon...
(On the other hand, I completely understand the hesitation: some people seem to buy eReaders like someone else buys bread, but I'm one of the kind that tries to use a device for several years... And then it's important to be (almost) completely satisfied.
Not much of a help I fear... Just some musings...