I'm happy to think of the uni-pac as a gateway drug to a better bike, but on the other hand, you can get a bike that will last longer that's second hand for just as cheap, then when you ready to spend more money you'll know more about what you like/don't like about your current ride.
Don't just enter into mindless consumerism, spend some time thinking about what you really need from a bike, then find a bike that suits you.
+1 Not sure how much unipacks go for, I think it's about £200 not sure though, I got my Langster for that price, and it's a fantastic bike, and for £200 it's a great bargain, as it's a pretty popular bike you can find out just about whatever you want about it if you're new to riding fixed (as I was) which is one downside of going for the conversion for your first fixed. Though as many people are more than happy to point out =P they aren't the most asthetically pleasing bikes, which I guess is why people go for the unipack. Hopefully if they do have a bad experience with them it'll make them want to upgrade rather than make them hate riding.
+1 Not sure how much unipacks go for, I think it's about £200 not sure though, I got my Langster for that price, and it's a fantastic bike, and for £200 it's a great bargain, as it's a pretty popular bike you can find out just about whatever you want about it if you're new to riding fixed (as I was) which is one downside of going for the conversion for your first fixed. Though as many people are more than happy to point out =P they aren't the most asthetically pleasing bikes, which I guess is why people go for the unipack. Hopefully if they do have a bad experience with them it'll make them want to upgrade rather than make them hate riding.
OTP FTW!