We already have a couple of different sorts of nipple clamps. The little adjustable ones like these
and the sliding prong ones like these:-
The wife is really getting into the first ones, wondered about upping the game. Any advice, recommendations, or views on the differences you have found between these and the more vice like ones or the vacuum suction type.
Hey! 
Yes, I started out with some fluffy pom-pom nipple clamps very similar to the first link you posted. but I find them too weak now.
Then I got some ones very similar in construction to the second link that you posted. They have dangling jewel balls on them and they look sensational when they’re swung about but they’re more difficult to put on, as they have to be held in place and then the screw tightened. So I don’t use them so much, but they’re worth the faff once they’re on!
My next stage has been using magnetic balls that are not the same, but very very similar to the ones in this link: https://www.lovehoney.co.uk/bondage/nipple-clitoral-toys/nipple-clamps/p/dominix-deluxe-magnetic-orb-clamp/a35207g63970.html
And whilst they don’t look so pretty, they do the job and the pinching is definitely the most intense so far! So I recommend them.
I’m also trying to get into using a clit clamp the same as in your link but it’s not happening so far. I’m persevering though…
I haven’t used any of the other toys that you have considered, but interested to hear what others have to say in the matter also. Hope that helps X.
Hey!
I started with similar clamps to the second link you posted, but after a while found them to lose their intensity, that’s not to say I don’t go back to this design at all, I have a few pairs of LH ones, and they don’t disappoint, I find with these ones, the main thrill is the ability to yank them off.
I’d recommend something along the lines of these: https://www.lovehoney.co.uk/bondage/nipple-clitoral-toys/nipple-clamps/p/4-point-adjustable-weighted-nipple-press/a47582g85157.html
I know it’s similar to the first link you posted, but having it as a 4-point adjuster compared to a 2-point makes a big difference in my opinion. I also love the weighted ball dangling as it adds an extra layer of pressure/intensity, more so if being on top and having them swing around, pull down harder with moving/gravity 
Interested. But never done nipple clamps, I do like a bit of pain and pressure but it isn’t something we’ve explored yet, what would you say are the best ones for beginners?
Has anyone tried the little nipple suckers? They look funny on but omg what a lovely pain they give! I’m just starting to move from them to clamps but not sure the pain/pleasure can be matched. They make your nipples look and feel sensational for ages afterwards!x
My favourite ones are clover leaf clamps, with weighted balls, they pinch well, and pull too.
I can’t see them on here and i think I purchased them on a large online retailer.
Haven’t seen this design before thank you for reply
Do you mean this type?
Sorry to ask but cannot see your profile, and don’t want to make assumptions, what gender do you identify as?
I quite like the nipple clamps as well, and this type was my first thought for the wife, some of the come with a weight attached to each clamp. However wasn’t sure if it would be too aggressive for her?
I’m fairly partial to… stainless steel wire clothes pegs.
The one we have offer a deliciously nasty bite 
. Really nice addition to my solo time.
@tintin I’m male, yes that is the type of clamps, you can pull on the chain for extra pinching. My favourite ones have 60 gram weights, so they pull and pinch well.