sledheavy;
I have to say, that I personally would never purchase a Hanwei, and then go cutting up a wooden chair....
As knife saber stated, they are not really designed to take that abuse, and if you do certainly plan to just go up to the next models, and slice through chairs, then you sure have alot more money to spend than I do, as that is a sure way of ruining your katana's, and after the Mushashi, you'll be onto the Orchid, than after that,... who knows, point is, your katana's are not going to last.
If I can also add, that if you are untrained, it can also have an impact, for proper sword technique is a very detailed, and skilled area, and it takes alot of skill to cut an object correctly, and an individual whom is untrained will often damage the sword, and all it takes is one indirect hit to bend a fine katana, yet to repeatedly cut in one, swift slice takes time, patience, training, and years of skill.
I'm glad the PPK stood upto your expectations, and it is the entry level katana of the Hanwei line. I personally own a Mushashi Daito, yet I would never cut anything, and I wouldn't expect it to last too long if I did. It's upto you what you wish to do with your swords, and you may have much more money than I, so you may be able to support breaking a katana each month, however I can only suggest that you treat and respect your katana's, however if you do plan to enjoy the results of what a standard production katana can do, than it is probably better that you chose a PPK, since I too would use that sword, since it is the more affordable of the line.