Here's how I would rank them, in order of suitability for your needs based on your message:
TiVo Bolt OTA (4 tuners) $250 + All-IN Plan $250
This is probably your best bet, especially if you like to use a regular IR style remote, and want a box that just plugs into the TV without having to buy another streaming device for each TV. It is the most costly. Tivo sells your viewing data to third parties (or can), but then everyone does now.
Fire TV Recast (4 tuners) $280
The Fire TV devices use bluetooth remotes so you can't (easily) control them with an IR regular remote
. To use this, you will need a Fire TV streaming device at your TVs. You are in the Amazon system with this DVR, and your viewing habits are recorded by Amazon for ads when you surf the Internet. No guide fees, and if you like Amazon, this is a good choice.
ChannelMaster Stream+ (2 tuners) $150
This also uses a regular IR remote and you can control it with something like a Harmony remote. While the lowest priced, you do have to add another $50 to $60 for a hard drive to use as the DVR storage, so the all-in cost is about $200. Right now, I can only get two days of guide data because I'm in an area that has a lot of channels. I think it's a memory issue, but if you receive less than 100 channels you can get up to about 7 days guide data. Because I'm in LA, where I get 180+ channels, I'm limited to 2 days. But, there is no guide sub as it is provide free by Google Live Channels. You have to have a Google / Android account to get the guide data, so your data is sold like Tivo.
Tablo (4 tuners) $200+ +/- $150 sub
This is another network box so you will need to have streaming devices at your TV. If you are a channel surfer, from what I hear, this takes the longest to actually change a channel. But it is supposed to be better than the 7 seconds it used to take, and they may have it down to 3 or 4 seconds by now.
HD Homerun showed off their $200 all-in-one DVR the Scribe Duo, with two tuners and an internal 1 TB hard drive - see http://www.engadget.com/2019/01/09/...erun-ces-2019/
They also added a DVR file server that is backward compatible with their other devices, called the Servio. For $150 it removes the need to record programs to a computer or NAS device like their prior devices. What I like about HD Homerun is that the files it records are regular, unencrypted MP4 files that you can copy and play on any device. We record shows and then put them on my wife's tablet for when she's traveling.