Thanks, dgludwig - I meant it.
Denis,
Thanks. I know your comments weren't aimed at me, and I know all of your comments were supremely accurate - all in all, you're pretty credible. I also think it's a good idea to let people know there are long-term logistics and maintenance issues.
I suppose my point is one for posterity - those who read this later. There are reasons to buy one for use in spite of the clear disadvantages.
I don't disagree with your disadvantages. If you hadn't been so good at making your point I wouldn't have bothered to rebut it.
