I’m glad you stated you are primarily interested in viewing.
My first question is always to ask what the poster’s interest is.
Reflectors are a good choice for viewing. They fold the light and can get some really deep reach into the more distant objects, meaning for example you can look at the moon with smaller telescopes or the moons craters with the higher magnification reflectors.
Bigger aperture reflectors work best for astronomers interest in solar system objects, Moon, Planets, and with the right Solar Shields the Sun.
When beginning, my interest was with Astrophotography. So I went for Deep Space Objects (DSO) and found the recommendation’s were refractors, triplet (or now Quadruplet) lensing, and small telescopes worked best. I began with an Orion ED80T CF. Extra low Dispersion, 80mm, Triplet lens design, and Carbon Fiber tube construction.
Reasons are ED focuses the light better for the cameras sensor. It doesn’t scatter the light like doublet lenses can.
80mm simply is the aperture size. At the time, the difference was my 80mm was $995.00m or a 100mm at $2500.00. Not being a moneybags, I couldn’t justify the extra 20mm for $1500 more.
Besides, I wasn’t sure I would continue in my AP endeavors.
My first mount was a Go-To type in the hopes it could do the basics needed for my interest. It did, when it wasn’t in the service department getting repaired. 
3.5 years later that mount failed for it 3rd and last time, I stopped throwing money at it. The 2 year warranty was gone, and it was junk, expensive junk.
Quit? Or go on? I decided to continue but to learn from my beginners mistakes.
Be careful to not become a telescope Collector. Study what others are doing with a telescope you find that fits your budget and desires. Ask before you buy.
Unless you want to be that guy with 15 to 20 telescopes that only uses 1 or 2. I don’t, so in 13 years of this hobby I’ve only had 2 main telescopes. And both the best I could justify to myself for my interest in AP.