I would also say I am not an expert, but I have several and they are in daily production use.
First one I got was a RB260GS. Depend on time of year, it has somewhere between three and all six ports in use (the sfp is an electrical gigabit interface). It is out in a brick column in my front yard so it gets hot and cold. It has been there for about 4 years and just runs.
Next up is a CRS-326-24G-2S that was accidentally shipped instead of a CSS-326 that I had ordered. The vendor figured a swap was not worth their effort and told me to keep the CRS. I am running it in SwitchOS as I intended it to be used strictly as a switch. It is located in an air conditioned radio room up on mountaintop radio site that is connected to my house via a 5.5 GHz microwave path. It has about 2/3 of the ports in use - almost all of them at 100 Mbps. Neither sfp is in use. It's been in service about two years now and it also just runs.
Last year I replaced one of my HP 10/100 switches here in my family room with a CSS-326-24G-2S. It has about 3/4 of the ports in service with a mixture of 10 Mbps, 100 Mbps, and 1 Gbps. One sfp is a 1 Gbps electrical interface and the other is Multi-mode fiber (not yet in service, but tested). I had some issues where the switch would lock up as a result of my DSL modem going nuts, but after replacing the DSL modem, that problem has disappeared. I have no idea what the DSL modem was doing to it, but it would not pass traffic connected traffic through the switch. A power cycle would fix it.
Last year i also replaced a dumb switch in my attic with a CSS106-5G-1S (current version of the RB260GS). Like the other RB260, it has had anywhere from three to all six ports in use. The electrical sfp back to the family room switch being the only one operating at gigabit. Being in my attic, this switch is exposed to severe temperature extremes. As I'm typing this, it is a measured 139.6 degrees F up there and my high a few weeks ago was just under 150 degrees F. The lowest temperature I have seen up there is about 30 degrees F. Like the other one, it just runs.
A couple months ago I purchased another CSS-326-24G-2S to replace my last 10/100 switch. Because of other projects, I have configured it, but not yet put it into service. I will go into my air conditioned data cabinet. It will have almost all 26 ports in use. One sfp will be an electrical gigabit (to the first mentioned RB260GS), and the other will be a multimode fiber link to the family room CSS-326.
All of these make extensive use of virtual LANs - I currently have 15 VLANs in service at my house (yea, I know not normal, but there is a reason for it). Except for the original RB260GS which is running SwitchOS version1.16, all of the newer switches are running SwitchOS version 2.7. I have been very happy with the Mikrotic switches.
RB750Gr3, RB750r2, CRS326-24G-2S (in SwitchOS), CSS326-24G-2S, CSS106-5G-1S, RB260GS
Not sure if I beat them in submission, or they beat me into submission