I pretty much agree with this. I started out with an 8125 for one reason, I wanted an inexpensive tablet with WiFi and HDMI out to stream internet videos to a flat screen TV. The 8125 did a pretty good job with netflix 1.2.x but after a while I wanted more mobile functions, added a microSD card, a USB keyboard and mouse, then upgraded to the 1126, which is a nice cheap 1024 x 768 tablet. But along the way as I learned more about Android I found the lack of OS updates and lack of support frustrating. The video capabilities are limited and have a hard time with Netflix 1.6.x or 1.7.x.
I moved over to an Acer Iconia A500. Even the notorious slow Acer support is better and all of the online stores (Market, Google, Play Store, etc.) are easy to access. Video playback is much better. This has become my tablet of choice with either a USB or a Bluetooth keyboard when I want a keyboard.
I gave the 8125 to a friend, plan to sell the 1126 with USB keyboard but briefly considered buying a used 8127 or one of the newer ICS xx42 models. Howevber, they just don't seem to be worth the money due to lack of support.
The user who compared Coby with other brands, such as Archos, pretty much summed things up. Coby seems to be more interested in rebranding Chinese models with limited Android support. When discounted they may make an interesting 1st tablet, but as users get more savvy, Coby support disappoints.