I've had a VMC200L for a couple years now. I've used it for some single shot/minimal processing DSO photography with decent results. Have as yet to try any planetary imaging with it as I have a refractor for that.
IMO, the strong points are;
1). Light weight and (relatively) small with a convenient handle, portability is great.
2). It takes a LOT and I mean a LOT to dew up the primary mirror. This is a great asset in the swampy area where I reside and do most of my observing.
3). Once it's in collimation, it holds very well.
4). With the right eyepiece, the views are very, very nice. DSO views are wonderful. Planetary views are sharp and detailed...….with the right eyepiece. (See issue #3 below.)
On the downside;
1). DO NOT mess with the collimation unless you absolutely must. It's pretty touchy to get it right and the 2.5mm wrench holes are tiny and difficult to work with in the dark. Mine got slightly off and the Vixen instructions say to only adjust the primary. So, that's what I did. To keep it short, it turned out there was nothing wrong with the primary, it was the secondary that had gotten out. Ended up taking hours to get it straight again.
2). The black paint used inside the primary and secondary tubes is lame, allowing light to ricochet about like kids in a bounce-house. Flock it in both tubes. Some use O-rings to baffle the secondary tube. This will improve contrast quite noticeably.
3). At low power say, 100x down, you will see spikes thrown off of the brightest planets, Mars and Jupiter especially. But from say 150x to around 325x they improve and look finely detailed although lacking slightly in contrast. Saturn is gorgeous through this 'scope. I was also able to resolve Neptune with remarkable detail on an exceptionally dark, clear night at Staunton River.
I am told thinning the spider vanes to less than 2mm fixes the "diamond" shaped stars. I haven't done this and I don't notice that they're so bad anyways. Not visually, anyhow.
Okay, that's my assessment FWIW.
Rock on and Happy Viewing,
Edited by astrogeek64, 08 June 2019 - 09:15 PM.