[citation][nom]Scour[/nom]In Germany the Vertex 4/Agility 4 cost 20€ than a M4/830.A M4 uses Intel ONFI-chips, a Samsung uses Samsung own chips. Both are known as hig-quality-producers for memory-chips.The speed-difference is something you only see at benchmarks, not in real life (or u use your SSD for 24/7 writing?). The reliability of M4 is a fact, it is more than 1 year on the sale and the positive comments are still more than most other SSDs have.And I why u think that Indilix are more reliable than re-badged Marvells? OCZ uses other FW and use higher clockspeeds in some cases, but more reliable is not something I see so far[/citation]
In the USA, the 830 is the same price as the Vertex 4 and the M4 is a little cheaper, but it's a little slower. The difference can be seen in much more than jsut benchmarks and I know this from experience. Saying otherwise is like saying that the difference between a 7970 and a 7770 can only be seen in benchmarks. You simply need to use programs that make good use of a very fast SSD and a lot of what I do is storage bound. You try running several VMs, decompressing the ISOs to install several more, downloading more RAR files to decompress, and running a few other things all at once and tell me there's no difference between an 830 and a Vertex 4. I see the difference quite clearly, especially when I do some truly heavy work.
Also, since you mentioned the reliability of Intel NAND chips, let's see what NAND chips are in the Vertex 4"
Intel IMFT synchronous 25nm NAND
http://www.tweaktown.com/reviews/4653/ocz_technology_vertex_4_indilinx_everest_2_256gb_and_512gb_ssd_review/index2.html
Well well, looks like the Vertex 4 has some pretty decent NAND chips.
Considering that most of the most reliable SSDs use Marvell controllers, complaining about OCZ using them seems ridiculous, to say the least. M4, Plextor, Intel (up until recently), and several others all used (or have used) Marvell controllers.
Then you ask why I think the Indilinx controller is more reliable than a re-badged Marvell controller. Considering that I didn't say I think that, I'm not even sure where you got that from. The reliability of Marvell's controllers is a known fact and the Vertex 4 has a Marvell controller (albeit with customization). That doesn't make it reliable automatically, but it does support it in that aspect. However, we have good proof of the Vertex 4's reliability already, so it is reliable. I don't know if I'd put it ahead of the 830 and such, but I would put it in the 830's league. The Vertex 4 is also the fastest for the most workloads with the new firmware. I see both reliability and performance where it should be. Let's also not forget how the Vertex 4 has the lowest latency (access times) of any SSD (at least of any of the dozens I've seen it compared against and the few that I've compared it against myself).
Vertex 4's five year warranty also helps it in this very well. Here's to hoping for a Vertex 4 MAX IOPS model to really force competition to rise up.