I'll take a crack at giving you a few ideas, when I was setting up my home network, I found myself in a similar situation as you looking decent kit, without breaking the bank.
Since your already familiar with IOS, you might take a look at the SG lineup SG{100,200,300} series of cisco switches. Your already familiar with it, so it would be an easy transition to do the things you might want to do with it and it won't break the bank. Like Danb35 said, Dell has a really good lineup too. Also take a look at the HP Procurve lineup. I went with a HP 1900 series switch, which gave me all the layer 2 stuff I wanted, a smattering of layer 3 abilities and several SFP+ ports, and some www management and a serial interface.
To take full advantage of the switch you really need to take a look at the router too, I first went with a Mikrotik, but switched to the Edgerouter by Ubiquiti. It replaced a Netgear Nighthawk wifi router, which now is essentially an AP. This opens up a lot of possibilities that just aren't (and shouldn't) be there on consumer products. Take a look here, and you see a lot of people struggling with OpenVPN on their Freenas box. Some of it is self inflicted, older hardware etc. Personally I like the separation of services model.. Even with hardware accceleration, I prefer to remove OpenVPN from sucking up system resources on my NAS, it is for safely storing data, serving and transcoding content. Even putting it in a jail, thats not foolproof, as I've recently had php-cgi in my jail crash my freenas system resources, to the point of reboot.
Two things make it important enough for me to invest in prosumer grade networking equipment, security and control. I run several different VLANs, like an open access network for the neighbors, a network for houseguests, a network family devices, and one for my workstation and freenas server. What's become immensely more used is that I now have more control over all the "smart" devices. IoT devices love to phone home, some things aren't bad, but you don't have much control over them otherwise. Two smart tv's, a smart printer (which seemingly never works), a couple of Pandora clock radios, a thermostat, htpc, XB1, PS3... It never seemingly ends, and I don't mind what all they download, but I like the isolation aspect of said devices, and being able to control what they upload.
Don't underestimate your network speed needs for the future. For a lot of folks, they never leave the social media and streaming websites ecosystem; instagram, pintirest, reddit, facebook, netflix, spotify, youtube etc, so something like prosumer grade networking equipment, perhaps even freenas, is probably overkill for users of the aforementioned/similar sites. However, they, and websites in general are becoming very data rich, and if you are actually using freenas, you can run into times where a gigabit lan could run into slow times.