I'm new to Helix. Did months of researching before I bought. I went the PA speaker (Yamaha DXR10) + quality headphones (Sennheiser HD600) route and could not be more pleased. I played in bands in the 80's with tube amps and some stomps then went to college and forgot about electric. Acoustic was where I stayed for the next 15 years. Then was asked at church if I'd like to play in the P&W band there. So back to electric it was. We use IEM's with an Aviom system. I run to FOH using 1/4" out mono into DI into FOH. At home I use the headphones to create and jam, and use the Helix > XLR > DXR10 to see what it really sounds like at ~90dB.
At home I originally placed my DXR on the floor, but for me personally and even with the contouring, I like the way it sounds off the floor so I got a tripod stand at chest height. To emulate the PA at church. Sounds really good to me. I haven't ever heard or played through any of the coaxial FRFR's, but from what I gather if you want more of a classic tube amp sound then they might be worth looking at. They're not cheap.
Long story short, research, read, research more, then go for it :)