Final Decision On An Integrated Amp

I'm finally at the point of selecting an integrated amp to replace the old Prima Luna Dialogue One.  I've narrowed the field to the following:

1. Conrad Johnson CAV-45
2. Modwright KWH-225i
3. Octave V40
4. Raven Osprey
5. Jadis Orchestra Black

I've read plenty of reviews on them and sifted through posts on Audiogon and elsewhere, both good and bad, and it seems like a decent lot of gear.  They are all within my $5000 to $6000 budget (the Modwright is over my budget, but not by much).  And nearly all have a home trial period, though I can't do it for them all since return shipping and credit card fees will eat up my budget.  Each has things I like and want, but none have everything I desire.  None are perfect.

What I'm trying to find out is if there is some unwritten cautionary story about any one of them.  I'd hate to find out too late that one is prone to burning out this part, something else prematurely fails, there is a problem getting service, etc.  Does anyone have a negative experience with these or something that went seriously wrong?

Thanks,

John Cotner

New Ulm, MN