I used an 'old' compaq EVO with a win2000 OS on my trip and was able to run and test different nav softwares and programs on my way. However what I learned is that lap tops are 'disposables'. Considdering Your mentioned cruising area there are more things to considder than just which type of lap top. The Pacific is a squally and rather thunder and lightening filled area, and no computer gets happy with voltage peaks either in the power innlet, but even more sensitive the USB and serial ports. I had mine hooked so a separate 1000W
inverter and a battery powered
Garmin 86
GPS, and no interface to auopilot or other equipment. That set up probably saved it when the ligtening got a bit too close in the Indonesian waters when all the
Raymarine systems went down due to voltage peak in the Seatalk circuit. I ran it for quite some time on a 12V sigarette adapter, but got power problems due to corrosion in the female part of the adapter.
Whatever band You buy the all use more or less thesame type of hard disks, and that might be the most vulnerable part, mine started togive up in the Marquesas, but I managed to get it going to Fidji. Then it was time to change to my Compaq Pressario 1500 running XP. Power consumption almost doubled!
Shortly my recomendation would be:
Get one 'simple' for navigation, and navigation alone.
Then as back up Your daily 'working' station laptop. (
SSB, fax or whatever). Whatever data You need to transferr between them, a memory stick is the best. Just remember to put the same file format in both(NTFS).