Sorry if my comment is a bit late since I went to Florida in October 2002, but I have been reading some of the reports that other people have written about JMC Airlines and I feel that I best write about my experience.

In October I travelled to Florida onboard a JMC A330-200 (G-OJMB) in JMC+ class and it was excellent. We were on time on both the inboard and outboard flights, and the meals were fantastic. During the 9 hour flight I was provided with blankets and pillows which was excellent because I have travelled to Florida twice before with a Britannia 767-300 (g-obyc) and a Airtours A330-200 (g-mojo), and those flight were awful, so I have to say that JMC is the best charter airline and it beats Britannia and Airtours together.