Ive gone through 3 PC laptops in the last 5 years.
Compaq Presario 2120 1998-2001
Toshiba Satellite 2805-S402 2001-Present
Dell Latitude CPx 2003-Present.
The first was a Compaq Presario back in 97. OH MY GOD. What a colossal POS. I not kidding here folks. Biggest mistake of my life. That laptops ONLY good feature was its speakers. Fantastic sound. But the rest of the system. In the 3 year period I took that laptop in for repairs 8 times. (To the theme of 12 days of x-mas) 4 fried power sources, 2 bad mothers, 1 bad BIOS and a one BAD BAD vid card.

The final time the system went bad, which was just before the warrantee expired I said enough of this crap and made sure that there was no WAY IN HELL they could fix the problem. Somehow the CPU in my laptop mad direct contact with a car battery. I swear I have no clue how it happened. *whistles and looks at his feet.* I took it in and they said they couldnt repair it so theyd give me a choice. $1,000 towards a new laptop or a similar Compaq model for free. Fat chance with option two. I will NEVER touch a Compaq ever again. So I picked up my second laptop for 1/3 off the price of $3,000. This was in 2001. Its a Toshiba Satellite 15 800Mhz with the first gen GeForce 2Go GPU and CD-RW/DVD combo drive. In the time Ive had it Ive taken it in for repairs twice. Once for a dead battery from which I understand that is fairly common after a while, and the second time for a bad DVD drive. (Note to self-if your are going to RIP your own DVD collection do it on a drive other then your laptop.) Other then that its a fantastic system. Fast enough to handle games and a sound system to die for. The thing has a subwoofer on it.

My biggest complaint was battery life. To say it sucks is an understatement. About 2 hours IF Im lucky.
This precipitated the acquisition of laptop 3. My company uses Dell. Ive always liked the Latitude series and the CSx series we use here, but are currently phasing them out, have a strong batt life. 3+ hours which is good. So I ended up getting a system off of e-bay for $300 that included a second battery and CD-RW/DVD drive. In addition that that I jacked the hard drive up to 40GB, jacked the RAM up to 384MB. All told it cost me about $500-$600 for this system. It has a 13.3 display and is only 1.14 thick and weights in a 4.3 pounds. The best thing about it is the silence. I know when an app is eating the CPU clocks on the thing because that is the ONLY time the fan switches on. (And that usually happens when an app is behaving badly. Thank god for W2Ks task manager. Whats even cooler, no pun intended is that its a variable rate fan. (High-Medium-Low) So even what the fan is on its relatively quiet. Right now Im in the market for a new laptop.
Doubtlessly some of you guys have seen my rants on the PowerBook. I love the design but every benchmark Ive seen a comparable Pentium M based system soundly kicks the snot out of even the high end 1.33Ghz CPU found in the 17 PowerBook. As Ive stated before I have no problems paying a premium for a PowerBook. After all its suppose to be the Porsche of the computer world right? But if Im going to pay that premium I expect it to thrash the competition or at least keep pace. This isnt about the size of my dick and needing the most powerful thing out there. Its about future proofing my devices as much as possible and getting the most bang for my buck. This is why Im in a holding pattern when it comes to getting a PowerBook. I want a G5 based PowerBook. I believe, hope?, that this will do to the PowerBooks what the G5 PowerMac did to the desktop line: Bring it in line with the competition. That and it will prepare the system for the day that Apple releases a 64-bit optimized version of OSX. It will happen. Its just a matter of time. Id rather be ready for that day then having to go out and plunk down more $$$$ on a new system. So for me its G5 or bust. Then and ONLY then will I consider switching. Or as I term it merging since I will continue to use my 13 Latitude in those situations where Im looking for something highly portable.