Up to yourself what you buy and good luck with the decision.
I went with what I was advised was what I should buy if I only wanted to buy once.
I bought Tubus.
Because I'm "fussy" about scratched paint on racks from panniers which can cause rust and a
general eyesore, I bought their stainless steel set of Cosmo and Nova.
I got a great deal from bike24.com in Germany as part of a large order.
You can get a lot of items for a standard postal fee of 20 Euro from memory.
I've also just ordered a front flat rack:
http://www.ebay.com.au/itm/130765706884
It adds a lot of versatility without adding a lot of weight.
Again its stainless, it has a fender mount to adds some stability to a front fender, it can handle 22kg or 50pounds of weight.
I originally thought I was going to get a Surly Nice front rack until it was pointed out they weighed in at 1382 grams and could carry 32 kg.
My Tubus Nova combined with this Velo Orange rack weigh in at 755 grams.
The Nova 535 grams and VO Pass Hunter 250 gram.
Their recommended max loads being 15 kg for the Nova and 22 kg for the VO.
Their combined load being 37 kg surpassing the Surly by only 5kg but weighing over half a kilo less whilst doing it and also unlike the Surly, being stainless steel will never rust or need repainting.
I dont intend to carry anywhere near the max weight limits and will appreciate the eye-candy that is to me more visually appeasing - the stainless combo
Good luck with the decision.