ok, first off, just cause the fork is better doesnt mean its a better bike, ok, im not a pro, but they look like there quite similary good, the jamis had good forks, yet the fantom has a couple of models lower, but still pretty good, they have roughly the same rear, but the fantom has a 20 quid advantage (not much ). then, the jamis has full deor derailiers, while the fantom one has an xt rear deraliour meaning it will be smoother on the gear changes... so, i dont know, but these are factors to consider, also, the jamis has hydrolic discs, but to be honest they arenet the best iv seen quite a few good reaviews on the mechanical avid bb5's saying there are just as good as some hydrolic discs from the fantom... id know this cause iv gt avid 7's, took a while of searching, but remember, the cables streach on mechanical, but you have to bleed the hydrolic... so, there are the factors to consider.
When considering Bikesdirect, I would only buy from them if they had a considerable advantage as far as components and price. At this level, I would definitely go the Jamis because of the similar price, componentry and the Recon shock which is quite a step up from the low-end Tora 289 (Tora shocks go 289, 302. 318). Moreover, Jamis has a reputation for quality of manufacture and customer service that BD does not. That being said, my next bike will probably be from the higher end Fantom series.