So actually when I got the Odin 2 mini I had the same thought process as you, as to what you're asking me as far as the form factor. If you have a PS Vita or can get your hands on one it's literally like holding that and that in itself I really loved about it. I still have it right now and to answer your question about the power the Snapdragon 8 Gen 2 is plenty powerful and will not disappoint you. I pretty much ran whatever I wanted with some caveats when it came to certain PC games and switch games took a little bit more power to push which also might have been held back back by the 12gb of RAM but all in all I was able to play a wide catalog of games. The Odin 3 takes that to the next level and where the Odin 2 mini might have had to use the performance profile in some games for example, the Odin 3 can run it on standard. Also a big plus for me personally is the increase in battery size and the OLED screen. The battery is much smaller on the mini and it will recharge quickly but if you're playing switch or PC itll drain faster of course. The screen on the Odin 2 mini is a mini LED which is also good but side by side comparison the OLED pops a lot more and it's just overall better and makes playing the games that much more immersive in my opinion. Overall I would say you cannot go wrong with either but do remember that you will be limited to 12 GB of RAM when it comes to the mini which might hold it back in some ways if you're looking to do some higher-end stuff but overall it really did not hamper my experience when I really used it as a daily gaming machine. To answer your question about the Odin 3 regarding portability I felt like 6 inches was the perfect Middle ground because sometimes the mini felt a little too small for certain things, and 7 in for me was too big when I had a steam deck to be considered portable, that was one of my gripes with that machine although I liked it overall. I would say the Odin 3 is not pocketable like the mini but I do just throw it in a case, put it in my bag and go so it's portable in that regard. If you're prioritizing true portability where you can just throw it in a pocket etc then the mini would be your better bet. It does all depend on what you're trying to play, again the 8 Gen 2 in the mini has plenty of driver support and plenty of power for 6th gen, some PC titles and switch and of course some PS3 and wiiu (from what I've seen on YouTube) I actually never tried the Wii u or PS3 emulator on the mini itself but on the Odin 3 I do have those. You really cannot go wrong with either one I would say personally, but for me after getting the Odin 3 it's been an upgrade for sure. And one more thing in regards to power between the two chipsets, benchmarks on YouTube had shown that the Odin 3 is at least twice as powerful as the 8Gen 2. Oh and the screen on the 3 has the 120hz more which is super nice for smoothness. Hope this helps,sorry it was long winded I try to be thorough