[General Questions and Answers] Z80-Man:
Well, of course. So the question would be "which tablets include a phone device ?" Nice try for an answer, dude ! :p BTW, it's not absolutely exact, as I'll explain below. ;)

Ok, then, most SMALL tablets (7" or less) generally include a SIM slot because they allow you to phone without you looking as if you stuck a frying pan over your ear. :D This includes for instance the HTC Flyer and all Samsung Galaxy Tabs, just to cite the ones I know for sure, but of course there may be many others.

Classic "large" (10" or about) tablets can have a SIM slot too, even if NOT being able to phone. The reason is they allow 3G networking. If we are to cite another example, there is one on some Asus EeePads (not all models, so be careful when choosing).

Now the Eeepad is a bit special, as it has a true PC processor instead of most other models scaled-down 1 GHz ARM phone processors (the same my good old HD2 has already), and when you attach the separate mechanical keyboard to the tablet, you also get classical USB ports, allowing you to add a 3G dongle in case you bought a SIM-less model.

Apart form the Asus that's a bit out of the crowd (though not being more expensive BTW), you'll then have to check for the SIM slot when looking for a tablet.

Your question is of general interest IMHO. It wouldn't be a bad idea to keep a list of tablets with SIM slots to help people choosing, either here or on a dedicated topic, maybe put elsewhere (though I can't find where right now).

Now if you'd ask me which tablet I would choose if I had to, I'd answer "none" at first thought. The reason is, I do need a mobile device, but it has to do ALL : phoning, taking notes and noting down meetings, firing alarms, email and web browsing, remote access to the company's billing and accounting software, and my Word and Excel documents handy. And all this, of course, has to be with me all the time.

So, of course, the 4.3" format is just perfect. So why would I want a tablet ? The answer is just "I don't want one. Period". Now, why would I would want one anyway ? Well, maybe because it would be more confortable to show documents to other people, or just to get a larger workspace, after all.

So maybe the 7" format would be just fine. This, plus the fact it's able to phone, and the special stylus, always made me think about the HTC Flyer. Because I love my HTC HD and HD2, so I may stay sentimentally linked to HTC, so I probably won't be absolutely neutral here. There's also the Samsung galaxy Note, why not ? But if it's just for a larger phone with a stylus, is it worth the change ? Well, maybe for the stylus. The 7" tablet also still allows to phone whithout looking completely weird, though the limit is reached there IMHO. :p

Anyway, the point is, I want only ONE device to do ALL, and I want it with me everywhere and every time. That's why my HD2 is always in my belt pouch. I wouldn't want a phone PLUS a tablet to bring along. That's why I'm not really considering buying one, despite I really miss the stylus, as I often have to draw sketches and using the finger is just way too imprecise.

Now there's an interesting outsider, and it's once again from Asus : they threw some weird concept, a tablet containing a detachable Android phone ! All documents automatically synchronize when you stuff the phone into the hatch behind the screen, so you can actually always have the exact same and up-to-date documents on each, allowing you to bring and use any of them (or both !) according to what you're going to do and where you're going to. A concept at least worth a look IMHO.