Why in the heck would anybody ever even want to us Bluetooth for 'tethering' now anymore to start with? It's horribly slow and not of much use unless you absolutely have no other means of connecting through something else to get Internet access.
I know that things are a bit different in various countries, but come on know... slow Bluetooth thru anything... really? Headphones or maybe a keyboard, but far to slow for any Internet use.
Unfortunately, here in the U.S.A. things are all run by 'corporate greed'... meaning that you would not only have to buy and agree to extra 'data' usage terms for a cellphone (and even then only certain models) that allow being used as a WiFi Hotspot... at least then can usually get up to 3G speed.
In my situation, I just have no need/reason for a 'smartphone', but did want want Internet (after canceling the horribly bad Charter Cable Internet service I had)... I just broke down and agreed to a 2 year contract for a Verizon Hotspot that I can now take anywhere with me. It now serves as my only Internet connection for all of my computers here at home, and also for any of my tablets if I take it along with me).
As far as anything "iPad"... those things are nothing more than overly expensive devices that really do NOT do anything for anyone unless they are willing to be totally locked into the Apple ecosystem. Seems a rather strange comment I've heard about that Archos G9's before, but I've never understood it. I could easily sit next to anyone with an Apple iPand and show/say can you do this, or this, or this, or this... and they would wonder at at all of the things I CAN DO that they can not do so easily.
But, then again, that's comparing Apples to oranges (or Apple to Android or now Windows
. In other words, decide what it is you want/need to do BEFORE you buy a device! Each one is different and has a few certain things you MAY want. The key point there being is IF YOU DO NOT KNOW WHAT YOU WANT TO DO then just don't buy something until you figure that out first.