Personally I would never compromise so much that you have to with the Tab 3 just because it's cheap You said you paid $100, well I paid $140 for my Dell Venue 7 and the difference is quite substantial. I have since gotten rid of the Dell, actually sold it for $150 to a co-worker of mine and bought a Kindle 7 HDX, installed a AOSP ROM on it. This tablet makes both, the Tab 3 and Dell Venue 7 look like complete garbage, CPU: Qualcomm 800, 2GB RAM, 16GB Storage, 1920 x 1200 Resolution, Miracast. It just utterly blows the doors off of the other two tablets. It also show just how slow the hardware is in Tab 3 8" and Tab 3 10.1 when compared to a good CPU. So If the Tab 3 10.1 is the fastest in the Tab 3 lineup and the Dell 7 venue for just $140 is as fast with the same exact CPU as the Tab 3 10.1, actually the Dell is faster because of the extra 1GB of memory and doesn't have the very laggy, memory hogging TouchWiz UI, than the entire Tab 3 is defiantly not really worth a look. The Dell Venue 8 is actually a good buy as well with the even faster Intel Z2580 at 2 GHZ, 2GB RAM, 32GB, even comes with a pen and Dell case for only $250 vs the Tab 3 8 with it very old Exynos 4212(this CPU was released in April of 2011), 1GB RAM, 16GB storage.
Anyway, you get what you paid for, in the future I would sincerely doing a little more research and don't buy something just because it's cheap. Case in point, the Tab 3 7 is complete garbage, actually I would go as far as to say the entire Tab 3 lineup is garbage. If your going to buy a Samsung tablet, pony up the extra money and get a Note or Pro series because their below mid-range stuff just isn't worth the money. If you want to stick with low cost 7" tablets, then choose one of these; EVGA Note 7, HP 7 Extreme, Nexus 7 v2 or if you want to save as much money as possible than the Dell Venue 7 anything less than that though and your just punishing yourself.
Dell Venue 7 vs. Tab 3 7
CPU: Intel Atom Z2560 1.6GHZ (Same CPU that's in the Tab 3 10.1) VS. Marvel PXA986 1.2 GHZ (just a horrible CPU)
Memory: 2GB VS. 1GB
Storage: 16GB VS. 8GB
Resolution: 1280 X 800 VS. 1024 X 600
AnTuTu: 18370 vs. 10518 (just for giggles, the Kindle 7 HDX scored an amazing 32,835)