You're aware that over short runs, even 10Gbps can run on Cat 5e, right?
Having had recent experience in this I'll say it's very short runs I even found a 2m Cat 5e that failed to support 10Gbit.
I've been eyeballing Mikrotik CRS305-1G-4S+IN for a part of my home network (basically interconnect for my server, NAS and workstation) for some time now.
I've bought this switch recently with both S-RJ01 and S+RJ10 SFP+ modules. This has a few caveats that you should consider before buying this switch. While the switch is all metal and fanless, it gets pretty hot even on idle (45-50*C) and S+RJ10 gets really hot (~75*C). While this is still within tolerances I've placed the switch next to the exhaust fan of my server so it's not as bad now. It just needs some airflow. Also it's only possible to use up to 2 S+RJ10 in the switch at the same time. You can use SFP+ direct attach for 10GBit even after hitting this limit though. The gigabit Ethernet RJ45 is fully capable of all functions and not only a console/management port which is a nice bonus.
I'm very impressed with the software side of the switch. In SwOS mode it's capable of doing everything I want from it, but it also can be switched to the full RouterOS which is the best router OS I've seen in networking gear including "professional" offerings.