The vr6 without a doubt in my opinion the best vibrator there is. Certainly there are some improvements that could be made but... meh. The motor is rocking so all other con's of it simply fly away.
I personally do not have the Ina 2.
When I had to choose between purchasing the Ina or the vr6, I like the original poster read all the reviews, watched all the videos and did all my homework. What it came down to are some very simple differences that one must look at:
Clit arm and clit arm motor
Ok... I can spill the beans about the vr6 as I've this toy in my personal arsenal, but going on various friends opinions here and what I have discovered toying with Ina 2 in my hands at the store.
Clit arm and clit arm motor: I found that the vr6 was much more flexible and not vice like as on the Ina. Because of this, I feel that the vr6 would be more accommodating to various body shapes and sizes because the clit arm is more flexible. I did find both clit arm motors to be whimpy and more buzzy than rumbley.
Applying pressure internally/externally: this is where the Ina 2 would win. The Ina has a very stiff neck and cannot bend under applied pressure. So using the bigger bulge on your clit you can grind away and not worry about finger strain, as well as applying as much pressure as you want to your g-spot. The vr6 is pretty flexible and applying pressure you have to get your index finger just right to get what you want.
Motor: the vr6 in my opinion wins hands down. If you were comparing the original Ina to the vr6 there would be no competition, but, the Ina 2 to the vr6... the vr6 still wins but it is a marginal win in my opinion. The vr6 to me has more deeper vibrations than the Ina 2 so the vr6 would win the motor showdown (I am talking about the big arm and not the clit arms here).
Other points to mention:
1) The big arm bulge. I like my g-spot vibes on my clit more than to use them internally. So I do look at the heads and their shape. The Ina 2 is a little more pin point and tapered, while the vr6 is more broad.
2) The material: I find that the Lelo silicone is more a slippery silicone and you need less lube for use. However; that horrible plastic handle gets to ridiculously slippery that I loose control over it frequently. The Jopen toys are more of a wet seal feel kind of silicone and yes you need a little more lube to reduce the drag, I do prefer this silicone as my hands never slip while using it.
3) Waterproof: vr6 is totally and unworryingly waterproof where as the Ina 2 has that silicone latch that is worrisome as it doesn't always stay closed. Technically, Ina 2 is waterproof, but that latch does cause some worry.
Martiman said it best I think... if there is a choice between a Jopen toy and a Lelo... Well... not all motors on the Jopen Vanity line are equal. I do still prefer Jopen over Lelo and many other brands out there. But with the new Lelo 2 line... they've wiggled their way into my neither regions and made me stop and think of other possibilities.
Hopefully, I have been as unbiased as I can in comparing them for you. If you have any questions, please feel free to message me.