Bud - I don't have the PMF line on there yet. Its on the list for this week. Here's a link to PMF
http://www.pmftools.com If there is something you are interested let me know and I'll get you a price.
I have run 14" in the past when working by myself. I ended up using all PMF 802's in the end. It was easier to standardize parts inventory and the employees really liked using these.
Here is a rough guide I used to use when running size 4 blowers................1.5" tube 12" wide wand and whip for under 200'. 2" tube and no whip if longer runs or wider wand. The guidelines change if you are running bigger blowers.
For the average carpet cleaner a short (10-15') 1.5" whip and 1.5" tubed 12" wand should be fine. This size hose is more flexible and easier to work around objects.
If dual wanding is in the near future you may be better off getting another 12" wand.