I’ve been one of the primary critics of the F1 and now the F1+ on the forums here - documenting such issues as failing galvo’s and lasers on the original F1, and more recently the sometimes slightly “blurred” laser dot on the F1+
However - the F1+ did pretty much solve the major two issues of the F1 - which is to say failed lasers, and failed galvos.
As far as I can tell the machine is now quite reliable, there is still a significant issue in varying quality of laser dot between different machines - see here: Form1+ laser flare issues illustrated - pics and video and a solution I found that works for me here : A laser flare solution and initial results. At least I believe that issue remains; FL haven’t told us if they have fixed that issue on new builds.
That said - many users won’t even notice if their dot is not optimal - it’s not a show-stopper in the same ballpark as some of the issues you list above.
Resin consistency - I’ve used over 10 litres of FL resin, and haven’t noticed differences between bottles.
PDMS clouding - with FL resins you can just detect clouding by holding the empty vat against a bright light after about 2 thousand layers, but you should be able to get at least 4 thousand layers or more on one spot before clouding starts to affect the print. With other resins fatal clouding can occur much faster; during a single tall print, as I found with early batches of madesolid resin.
Dimensional Accuracy - much improved with the F1+. Not perfect, on my printer there is some variation in dimensions printing smaller parts on different areas of the build platform, eg 20mm squares with up to +/- 0.3mm variation fresh off the platform. Larger parts printed in the centre however such as 80mm bars, are so close as to be within measurement error using digital vernier callipers. Generally, post cure warping is going to be a bigger issue than print dimensional accuracy.
Resin turning goopy over course of multiple prints - this depends on your definition of goopy. If you mean a universal increase in viscosity for the entire vat, then no, I’ve not seen or heard of this with any FL printer. If on the other hand you mean increasing numbers of partially cured jello flakes in the vat with each print, then yes this can be an issue with the F1+ if you have a machine with a “flared” laser dot. I do, I have reduced the flare significantly with a diy solution, however I still get flaking and I find it pays to filter the resin through a paint strainer after every print.
I think the F1+ still has no serious competition at the price point - as evidenced by it’s dominance on 3dhubs.com
My take is - if the difference in cost between the F1+ and an EvisionTec machine (which I assume is sginificant) is an important factor, then you should be well served by an F1+. The original F1 had significant issues, but even then it was backed by replacements from FL support. Not quite no-questions asked, and initially only for 3 months, but even so, they definitely stood behind their product. The F1+ now has a full year warranty, and I believe support still stands firmly behind the machine. In fact I’d bet support is even better now - given the machine is now actually reliable.