We all have our personal preferences for different reasons. In my case, I have at least a dozen cannister filters, from Eheims to Fluvals to SunSun to Finnex. In the end, the Eheims are running my tanks and the rest are collecting dust in the garage.
My 'collection' of Eheim spans multiple models of Classic, Pro II and Pro III. All are silent and all are top-notch filters.
I veered into the Classic line because of a) their reputation b) smaller footprint c) 1/2" hose availability (for smaller tanks) d) price. And I do not like them. I find cleaning loose media a pain, I am not a fan of quick disconnects, and the inflow connection is iffy, at best. You can say I got spoiled by Eheim's Pro lines.
My 3 2026 are still running like new after some 15 years of constant use. My 4 2075 are still running my larger tanks for over 5 years. And I tend to leave them alone for 6 months or longer between cleaning.
I started my heavily over planted 40B with a SunSun. It got forcefully retired into the garage after constant cleaning and 2 spill within 3 months. It got replaced with a 2075 and I had peace ever after.
You can still find 2026 / 2028 used around $80. A 2075 runs about $200 new on sale.
My experience with Eheim support has been stellar. One of my 2075 turned out to be a pre-production version and developed a leak at the head. TWO brand new complete replacement heads were shipped to me overnight from Canada, at no cost (don't call their Customer Service, call their parts department).
The above is not to push you in a specific direction. The above is to help you to make an informed decision. Select a model that suits your particular needs. And when in doubt, go at least one size larger ☺