It's kind of hard to have a preference between two phones that aren't even relased yet, for me personally anyways. They seem pretty similar from what I have read/seen. Also, it will depend on what carrier you have, as to which device will be available to you. Rumour has it Tmo will not get the Bold at all, but will only carry the Javelin, for example....
(this is just what I have heard, so don't get mad guys )
lol i'm not that torn. see. i love the bold but the javelin is so sexy! i love the lines between the keys... i have big thumbs. i just wish it would come out on alltel... oops sorry. verizon XD
The Bold is the spiritual successor to the 8800 by the way. If the Javelin is anything, it is the spiritual successor to the Curve. It's holding onto the same side-rail design and separated key-style-keyboard leads me in that direction anyway.
Bold- Touching keys, similar size and overall appearance to the 8800, device looks too big for its own screen like the 8800.
Javelin- Separate keys, not sure of size, but the appearance is more like the Curve with the same black side-rails, screen appears to fit the device better, like the Curve. 3.2 megapixel camera sounds like it is aiming to be a more media/consumer friendly device like the Curve. (Bold's camera is 2mp)