Great question to start with Lenny, and some brilliant insights from other members. Being a spring chicken still (not seeing 70 until January) I still have too much gear a lot of which is heavy - this has led me to being more selective about what I take out with me but invariably the lens that I leave at home is the one that I want!
I have tried the OM system which I did find too small and fiddly, and unless you used the expensive Pro series glass I found the results disappointing. Fortunately it is a very popular system so selling my kit was quite easy!
My current Pentax alternative is the Canon RF system (2 full frame bodies the R6 Mkii and the R5) Mainly purchased for wildlife where the auto focus is blisteringly fast. Downsides, neither the camera or lenses feel as robust as my Pentax kit and the menu system is not yet intuitive for me (time and practice may resolve this). There is a weight advantage but it is not significant. Having said that I tend to use the K3iii for wildlife and not my K1, the Canon kit has more of a weight advantage over the K1. The EVFs in the Canon bodies is good, but does not equal the OVF in the Pentax
Results from the RAW files are excellent but do not seem to have the depth of the Pentax files when working on them on post - I process in LR and Topaz, use native Canon RAW and DNG files on the Pentax.
The one time I have used the Pentax and Canon together (sat comfortably in a Photo hide) both produced superb results which you would be hard pushed to separate.
If I had to sell one of the systems now I am pretty sure it would be the Canon. I just feel more comfortable with the Pentax, be that APSC ,Full Frame or my very heavy 645 kit !

Not sure my ramblings will have helped other that being one who has invested in other systems I keep coming back to the Pentax kit

Another vote for 3 and 5. Particularly like the sky in 3. Thanks for sharing

Superb shot with great detail (definitely best viewed large)

I look forward to your thoughts on the K70. I had one for a few years and found it a very capable and easy to use camera. Later model K70s had a different solenoid so should not suffer from the aperture block issue. Over the years I have only had one body (a K30) which developed the problem so hopefully you will avoid it with your K70

Really like the first one, stands on its own really well. The second image I do see working as a very effective part of the sequence you have described.
Personally I love the black space in the images, certainly adds drama

Nice set of a stunning location. I agree with others about the need to correct (slightly) the verticals.
My favourite image is number 3, super shot of the arches receding into the distance and beautiful colours, not the normal view one sees of this location and shows you eye for an excellent image.

Probably not a surprise that my favourite is the 3rd iteration (monochrome). The why is not as simple as I like monochrome work though. All 3 versions of the image have their merits and except for one small detail I would have most likely landed on image 2 as my favourite for the rich colour and atmosphere - that detail being the burnt out section of the sky in the top right of the image.
The treatment of the sky in the mono version does not draw the eye to the bright spot in the same way as the colour versions. Image 2 cropped to the top of the cliff, and therefore eliminating the bright spot, would probably get my vote for the beautiful colours and light on the rocks in the foreground
Great image and a very interesting question, thank you

I have had a copy of this lens for years - AF response is good and the image quality is superb. While other SDM lenses I have owned, particularly the 50-135 have suffered from drive failure the 55mm has never faltered.

I have found carrying a camera on my twice daily dog walks encourages me to shoot more. Like others on here I use my old lenses, particularly when out on these walks - interesting how some familiar scenes can take on a new life when viewed through different optics.

Great pictures Steve, while the hedgerows around here are also turning white I also prefer the detail images.
I do like the Q-S1 and 01 lens combo, super quality and very pocketable!