The Apilus is much more awesome, and it even has factory pre-sets that will make treatment energy selection for work on your wife easy. The pre-sets will be a joke when working on your man hairs, but at least they will be a starting point to work up or (yeah right) work down from.
The problem is this machine is really a budget buster from what your stated budget is set to be.
As for the level of awesomeness that is the Apilus Senior II, this model has all the software upgrades, that make it equal to the SX-500 except it doesn’t have the built in printer. That makes it only one step down from the Apilus Platinum Pure, which also doesn’t have a printer.
Your home unit would be one to two steps down from the best you could possibly have. Yes, that would mean your home set up could be better than many professionals have in their offices.
Is all that worth throwing the pre-selected budget out the window? Only you can decide that. The UC-1 could get the job done, but you would be best off having it delivered directly from the ebay auction to someone who could do the work of makeing sure it was ready to be used, and sending it on to you.
Of course, the difference between the two is like comparing a Ford Festiva to an Acura RL