The questions Charlie Wilson posed are known as qualifying questions and should always be addressed by salespeople and consumers. Intended use dictates the starting point in the selection of a boat (or car, house,entertainment system,. . .). I can understand meopilite's feeling that the Discovery 158 is quite an upgrade--it is, in his experience. And if his intended purpose does not include portaging any more than the parking lot to a stream or lake, light weight and the ability to toss it up on his shoulders for long periods is not a necessity. If he is not paddling for several miles a day, hull efficiency is also less important. If he is fishing, initial stability may take precedent over secondary stability. If he will be in protected waters and small stream a shorter boat with moderate rocker will fit the bill over a long hull that "rides on rails". Meopilite, we can't give you any worthwhile advice if you haven't given those qualifying questions much thought. In fact, I would disregard ALL of the advice contained in this thread. Why?, because if you have read any canoeing discussion about "the best boat advice" you would soon discover that none of us can agree on which is the best boat, and we never will. Heck, most of us have a stable of canoes to choose from for each time we go out.
I can assure you that we have big hearts that go with our big heads--that our love for the sport spills into the advice we give (in spite of our bickering and off topic spats). We would rather see you in a boat that you cannot wait to get out on the water right about NOW (cabin fever is gnawing at our souls) than one that would seem to be too much trouble to take out of storage.
Let us know, or at least help you to find, the answers to Charlie's questions so that we can be a helpful resource, as you had hoped we would be when you started this thread. In the end, you will be the one to decide which boat or material is best for you. If your dominant restraint is financial, finding a used boat (which many of us do prefer to do) is a better way around that constraint. One, it gets you into a better boat for the same or less money, and two, if it ends up being the wrong boat, you can get most, if not all, of your investment back. Another good piece of advice given in this thread is to look on Craigslist and Paddleswap for the boats that are listed most for cheap--there is a good reason that they are that way. The owners don't use them or want them for various reasons. Why are you replacing the Coleman, other people are more than happy with that boat? As evidenced by Paddleing.net:
http://www.paddling.net/Reviews/showReviews.html?prod=212
In my experience, I have had 3 brand new boats and over a dozen used boats. with a little bit of time and energy I have restored the like-new look and feel to used boats and take pride in them. Honestly, I gather you really want a new boat, and that newness wears off rather quickly__I may be wrong about this. If so, the good news is that the used boat market is about to get really good and if you are ready for it, you will score a prized boat through diligence and preparation. I wish you the best and if you decide on one of the two boats you researched, you will be happier in the end than you were last season. I have two used hulls that are calling to me, good luck.