I've "rolled the dice" on 3 handguns & 1 car, buying the first of a new model.
Ruger SR9: Gun recalled due to possible firing when dropped. They sent a prepaid box, which I returned with the gun and they returned the gun with a new trigger mechanism. The gun worked fine before & after, and they sent me an additional magazine & a hat. Impact to me was minimal as I could do without it a few days.
Colt New Agent: Gun recalled due to recoil spring issues. Again, a box was sent to me and sending it in & getting back was trivial. They fixed whatever the problem was, and they also replaced the plunger spring/tube as they felt it was too tight (I thought it was too but didn't mention it). Gun has always worked great, both before/after.
Boberg XR9-S: Some people had problems with light primer strikes so they sent me a new spring... Then later they sent another spring, because the first increased the trigger pull enough that some people didn't like it. I haven't had any issues so I just have extra springs in case I need them.
1995 Chevy Blazer: This was a brand new model, completely changed from previous generation Blazers. This gamble turned out pretty good as we had no problems/major repairs or even minor repairs until the engine grenaded at 173k miles. Most of those miles were very short trips in-town or to work (3-4 miles from start to stop), so the truck barely even got warmed up. I consider the engine life pretty good for that abuse.
As others have noted, you are taking a risk with first models of things and history definitely indicates that there are often issues... But if you buy from a reputable company such as Ruger, Colt, S&W, etc. they will stand by their products and make it right.
There are a few parts for the FI available, but you'll probably have to search the internet for some. Or you could just buy a whole new gun on Gunbroker.
FI Parts:
http://www.gunpartscorp.com/catalog/Products.aspx?catid=2126