I think you'll find that most carbon steel razors will give you about 15 shaves before they start to degrade. The slide downhill is very slow at first and often times you don't realize it because you become accustomed to the shave you are getting. Its only when you switch to a well honed blade that you realize the difference. If you use a stainless you'll get a few more shaves out of it before honing is required. I can't tell you about wedges because I only have one and its not a classic wedge but wedges are a real bear to hone when they need honing.

If you want to get a razor that goes a long time between honings I can tell you a TI Damascus will go forever as will a Maestro razor (well maybe not forever but will go a long long time).

Just remember that the greater the hollow the thinner the edge so potentially it should shave better but not last as long while a wedge is just a big chunk of metal so it will last much longer. I don't think the blade width really matters.

In the end if you only have one razor you may as well learn to hone because your going to have to do it sooner or later. A pasted strop will delay it but not forever.