So t the question i still have is about the size of the hose and how it affects or changes the way it preforms
If you want a high performance vacuum, you have to be willing to spend at least a couple hundred bucks, since a high performance vacuum motor ALONE can cost over 150 bucks.
Water lift numbers are about as misleading as horsepower numbers. Neither is under real world operating conditions.
You need a balance of CFM and water lift, and the diameter of the hose definitely matters. To see what I mean, take a look at this vacuum motor specification:
http://www.alliedelec.com/images/products/datasheets/bm/Ametek_Lamb Electric/70252307.pdf
The first graph and chart (ASTM data) shows how the lift and cfm vary with orifice diameter. Water lift declines to practically zero as the orifice increases to 2" diameter, and cfm does the opposite. These don't take into account the losses due to hose length.
Anyway, you asked about how the orifice diameter affects things, so that gives you an idea. But without knowing what vacuum motor a particular vacuum is using, and looking at both CFM and water lift at different diameters, it's just academic info.
Your best bet is to look for head-to-head shop-vac comparison tests (consumer reports, woodworking magazines are a couple sources). Or, just go to a big box store (home depot, lowes) and buy one and if it doesn't meet your needs, return it.
Bottom line, don't get too hung up on these various numbers because you aren't given enough information by the manufacturers to make any informed pre-purchase decision based on it. It's entirely possible that if you buy vacumm #1 rated at 40" lift and vacuum #2 rated at 60" lift, the one with 40" lift might perform better under the conditions you'llbe using it under and with the supplied hoses/attachments.
Another link for educational purposes:
Central Vacuum Definitions of Key Vacuum Terms such as CFM, Waterlift, and Air Watts - MD Vacuum