I'm on my 4th set by now (I think) and, as above I
always buy DID chains. They're not cheap, but they're well made and wear consistently.
As for sprockets - I have messed around with various combinations:15F 47R(stock), 16F 47R, 16F 45R and even tried 15F 43R but that was stupid, 'cos the standard 118 link chain was too long and I had to pop a link out to get it to fit...[doh!] I'm currently commuting 45 miles a day with the 16F 47R and find it a more relaxing ride at motorway speeds. Never had a problem pulling away at the lights, but you do use more clutch.
As for make, my first choice is now the Ognibene front sprockets (black with red rubber cushions) When I first started looking they were the only reasonably priced non-oem front sprockets I could find with the rubber doofers attached and I've just stuck with them. I have now used 3 or 4 and have found them to be
way quieter than bare metal. (I even tried a cushioned rear sprocket to see if it would be any quieter - it wasn't, but the sprocket did last twice as long
)
One thing though - although it would appear to make sense that you would, you
don't get better mileage from a larger front sprocket - in fact it is marginally worse (only marginally though). There is some science behind it but my brain's on strike so I can't remember - but your speedo will now be within 1% of your true speed (it sits ~1mph higher than my sat-nav) rather than 7% faster on stock sprockets.
Makes you wonder if the 16 Tooth Front was the original choice for the setup but someone in marketing said "No - we want it more lively than that!" and they went for the 15...