Well I can't really give my personal opinion on them yet, I literally just hit the buy button. I do have initial thoughts as to why I bought these, I debated different options for a long time, WAY too long actually lol. I didn't want to buy a 5-100lb dumbell set, just too much money right now. I think you may run into issues finding a 10-100lb set skipping those increments unless you can buy from someone on marketplace? No question though individual DB's is ideal state.
Anyway for adjustables, these seem be by far the most durable design, some other types you can't even consider dropping an inch or they blow up on you; that's a bullshit design for gym equipment if you ask me. The rep peppins come in second for durability I think. They cost way more, and the biggest reason, I wanted a cageless design, MANY people love the peppins though. They're peddled heavily by influencers like all Rep stuff, once and a while you see people complaining about weights sticking, unable to adjust them, having to use a hammer, etc.
Apparently with the heavy handle kit, which makes the starting weight 20lbs on IM's (goes up to 90lbs each total), the handle width and ergonomics are the closest to a normal DB, so that sounded ideal to me. Then other reasons like they are capable of 160lbs each with expansion weight packs.
Another thing to consider is the Eisenlink knockoffs which are really close to IM's, I almost bought these. There are small differences, like the handle is paint coated (worse grip), handle is longer, no option for heavy handle, the plates are larger, orientation of the plates matter when changing them etc. So if you're on a budget, these could work just fine, they go up to 160lbs too I believe. Again form factor was a big thing for me, so with ironmaster being obviously better here, it was worth spending a couple dollars more for them IMO.
