I would seriously look at Benro Travel series ( carbon) or photoclam for legs. The current benro b1 heads is just ok. but you can resell the head for about 100. Then pick and choose a photoclam head the size you like.33-38. The Benro pods are serviced and parts available stateside. Very stable. The photoclam pods are a little more and a little better. The Benro aluminum pods are kinda just ok. Their carbon travel pods are really stable even in 5 section. C169 or C269 are the models I have used and easy with a 1ds & 100-400, not taxed at all!