Not sure there is a radiator that has never let anyone down. They are hand built meaning there can be failures. I have a cheap Chinese 3 row radiator where the first one started leaking but the second one has been great so far. I am not saying that it was the manufactures fault but I am guessing it is the type of coolant (stock) being used. Check this out if you have not seen it. I have been running green on the second one and it has been trouble free.
shop.championcooling.com
We where talking a month or 2 ago about this very subject. With aluminium you and a single or dual core setup.
AFE offers a Bar & Plate design that looks to be very stout.
Flex-o-lite uses a extruded core, I think that is like a bar &plate design.
Griffin has a single row unit with 1.5 inch tubing.
C&R has a dual pass radiator with 1.6 inch tubing.
I am sure there are others out there is well. IMO there are 3 quality levels, the $200 dollar radiators, the $500 and the $1000. I am not sure that one is really better than the other. And a few companies also are able to build something custom.