I am building a Tamiya King Tiger at the moment and I'm just to upgrade the idler system. I found two options. I could either go with a set of:

http://www.welshdragonmodels.co.uk/schu ... -114-p.asp

http://www.welshdragonmodels.co.uk/schu ... -115-p.asp

http://www.welshdragonmodels.co.uk/schu ... -236-p.asp
---OR---

http://www.welshdragonmodels.co.uk/henn ... 1577-p.asp
I have been told that "they both are a big upgrade over the stock system" but I'd like to know which one is better. Please, ignore the price differences.
Has anyone here had a chance to test both and came up with any conclusions?
Thanks!