I don't think that it's obvious that now is the time to buy
There's a big wave of publicity and interest
However, at the same time, there are a ton of people waiting in line to get *massive* mining rigs using ASICs
This will mean a ton of new coins will be generated, and presumably a proportion of those will be sold, putting pressure on prices
So it's really very unclear. What is clear though, is that it's likely to be very volatile.
Personally, I'm happy to be invested, but not more than I'm willing to lose.
BTC are generated at a (mostly) fixed rate, with the mining difficulty increasing or decreasing depending on the total mining power devoted to mining at the time.
The ASICs aren't going to mean that more coins are going to be generated, it means that the people with ASICs will get a larger percentage of the coins that are generated, because they will be doing a much higher number of the calculations required to mine a coin.