"Only if you have spare cash.."4.0 starson by pinaklonkar
Pros: 1) Much better color and brightness reproduction than earlier generations.
2) The jagged lines are not a big issue; in fact from standard distance they are not visible.
3) I felt the response time is a bit quicker; game-load times are the same
Cons: 1) If you plan on using PSP for internet, very soon you will throw it in the dustbin. The keyboard typing is HORRIBLE, just HORRIBLE.
2) UMD is another pain in the neck. Makes PSP an expensive device. Why not use normal CD/DVD mini drive?
Summary: I just bought the PSP-3000, my first PSP. I am very pleased with the performance. But it is a really expensive console. If you are not a mobile person, build a gaming PC for 400 dollars (200 for PSP anyway)! But if you travel a lot of "4 hour journeys", PSP is a good bet. Get a 4GB memory card full of music, and two-three good UMD games you play and sheer entertainment is promised. Also, you can at least manage to check your e-mails if you find a wi-fi, but that will be it.
Gaming is a good experience, but no support for anti-aliasing so it lacks that shiny smooth graphics. Gameplay and controls are decent.
In a nutshell, expensive, but impressive. But this is going to get dated very soon. Expect the prices to slash in next 3-4 months.