Tight or loose? I assume you mean the slide to frame fit? If the gun is put together correctly, the slide/frame fit doesn't really have an affect on ejecting, feeding, or reliability. Reliability comes from a number of factors - not just tight or loose.
Accuracy comes from barrel lockup repeatabilty. That is controlled by barrel bushing / barrel fit and barrel lug to slide fit. Good slide / frame fitting helps some in accuracy but more in how the gun cycles as a poorly fit frame and slide can have areas where they bind which can result in both failure to eject and failure to feed because the slide slows down at the point where the binding occurs. Even a momentary small bind can cause the gun to not cycle correctly as the timing is then off.
There are two ways that problem can be fixed - loose fitment where there is no possibility of binding, and quality fitment where the frame and slide are fit properly, have no areas that bind, and generally give the "ball bearing" feel to cycling the slide.
Feeding problems can usually be traced to: magazine (#1 problem), extractor tensioned incorrectly (#2 problem) as the rim of the case has to fit under the extractor as it is pushed up from the magazine, incorrect timing (a number of causes), incorrect feed ramp slope, incorrect barrel fit (including barrel link length, worn link, worn slide stop).
The idea that a loose gun is more reliable because it isn't as susceptible to binding because of dirt (sand, soil, navel lint, etc.) is not really true as a properly fit slide and frame won't allow the sand/dirt to get into an area where it can bind - and if dirt does cover the slide area during cycling it will be pushed out the rail at the front or back of the gun. Now, I'm not talking about the powder talc type dust found in the Middle East as that is a whole different level of problem.
But, in any case - proper lubrication solves a world of problems - and that is whole different discussion that includes favorite pet formulas, what's the least expensive, "it's always worked for me" empirical data, personal opinions revolving around being ripped off when buying "costly gun lubes," being adverse to anything new, grease versus oil, bacon grease, what my mom always made me use, etc., etc.
Buy a quality gun from a reputable manufacturer and you should have about a 99.99% chance that the gun will work out of the box and continue working if you do your part (clean it and lube it properly).
As an example, I have six 1911's. All are fit "tight" and have worked out of the box. Contrary to Larry Vickers opinion, they have never been touched by a gunsmith after manufacture and have had thousands of rounds through them - and have never failed to feed, eject, or cycle.
But, I keep them lubed properly but not always clean as I have had to shoot several days in a row and have put over a thousand rounds through a gun without cleaning, but, the gun is always lubricated properly.
So, my suggestion is to buy a quality product and not to purchase based on "tight or loose."
The factory bushing was a turn-by-hand even with the FLGR. 
Sorry, I got a little carried away with those smily faces again.
