ghostyroasty, I've been doing the same type of research as of late and hear's my thoughts on the topic.
Don't think that you can flash your XBox 360 only once and not worry about flashing it again. The hacked iXtreme firmware is already at version 1.6, and people who flashed their 360's last year with version 1.2x need to reflash to 1.3 or better to play some of the newer game right. Also, if you plan on playing on XBox Live, then you'll should keep the firmware up to date with the latest and greatest firmware. iXtreme recently released version 1.6, and is still working on releasing it for the Hitachi drives. So if you do have a Hitachi drive, then you'll be flashing it to 1.5 now and then 1.6 when it's released. So there is no guarantee that you'll not need to reflash your drive, and the likely hood is great that you will.
With this said, you are probably like me and do not want to mess with opening your drive up over and over again when you need to do a reflash or maybe if you want to backup a game from your XBox drive (mode 0800 is supported in iXtreme 1.6).
The Xbox 360 Connectivity Kit will still require that you open your 360 up every time you want to access the drive from the PC and you can probably get the same results just using your XBox 360 to power and eject the drive* and a long SATA cable to connect it to your PC. The Blaster 360, from what I have read, looks like an external connectivity solution so that you do not need to open the 360 up again. It will still require you to have a compatible SATA connection to your PC, but will save you the headache of opening up the 360 when you want to access the drive on your PC.
If you plan on only flashing and don't mind opening up the XBox a few times a year (or maybe only once), then the Blaster 360 may be wasted money. If you are planning on using your 360's DVD to rip games and it can be put in mode 0800 using the Blaster 360, then it could be a wise investment for you. It doesn't look to shabby either.
As far as accessing the drive, using whatever method you choose, you may be able to use the built in SATA ports in your computer**, getting a VIA 6421 PCI card, or the Xecuter X360 USB if you want to access the drive via USB***.
I did my research for my Hitachi 78fk drive, so just note that some or all of this information may not be valid for your specific XBox 360 DVD drive. As far as I understand, Lite-On drives are a bitch and you may want to invest in the connectivity kit to make accessing it easier on a PC.
Hope this helps!
Nota Bene:
*If you use the XBox 360 to power and eject the DVD drive and a long SATA cord to connect it to a PC, remember that the XBox 360 will still need to have the A/V cable connected or it shuts down automatically after a few mins.
**You may be like me and want the cleanest solution as possible, if you do not chose the Xecuter X360 USB solution then you can order a External SATA port solution like this one a
NewEgg (you can prolly find them cheaper on eBay).
**I do not have experience in it, but I saw someone stated that the USB adapter wouldn't work, but this article from Team Xecuter's site states otherwise:
http://team-xecuter....tachi_pre07.htmThere is a good chance the future iXtreme development has stopped. And with the current firmware from IX 1.5.1 and newer has support for any future changes that may happen there is a slim chance it should ever need to be updated again.
Hitachi firmware development has stopped at IX 1.5.1.
At one point there was a way to flash Hitachi drives through a USB adapter but not for Samsung/BenQ, Liteon drives.