In my experience, there is very little difference between the acutance (edge contrast) achievable from standard intermittent agitation and continuous agitation. If you want to increase "sharpness" - you can add that by introducing edge effects using reduced agitation techniques like semi-stand.
But "sharpness" and accutance aren't the same - inter-related, and accutance is a major contributor to sharpness, but they are not the same.
Intermittent agitation -normal agitation- works well for me so far.
I don't shot too many rolls so Lab-box is till now really convenient and I'm happy with it. The key is how many rolls do you process simultaneously; if there is only one is convenient, but if you have many more maybe the use of a traditional -Paterson- tank is more advisable.
From the mechanic point of view, Lab-box worked fine for me from the very beginning.
I only regretted getting rid of my Paterson tank when processing C41 film, since a) it's nice to develop two rolls at once with chemicals brought up to correct temperature, and b) submerging the tank in water of the correct temperature is a good way to keep the chemical temps from drifting. So, if you shoot color, maybe keep that in mind (Paterson tanks are cheap enough that there's good cause to have both, honestly).
I only regretted getting rid of my Paterson tank when processing C41 film, since a) it's nice to develop two rolls at once with chemicals brought up to correct temperature, and b) submerging the tank in water of the correct temperature is a good way to keep the chemical temps from drifting. So, if you shoot color, maybe keep that in mind (Paterson tanks are cheap enough that there's good cause to have both, honestly).
I only regretted getting rid of my Paterson tank when processing C41 film, since a) it's nice to develop two rolls at once with chemicals brought up to correct temperature, and b) submerging the tank in water of the correct temperature is a good way to keep the chemical temps from drifting. So, if you shoot color, maybe keep that in mind (Paterson tanks are cheap enough that there's good cause to have both, honestly).
Rumbo181, you may want to look at this recent video on Rodinal and its various dilutions. It appears that I am not very good at seeing some aspects of photographs that others see much more easily but I feel I can see a difference. It isn't a massive difference at 1+100 but when he places the prints of 1+25 and 1+100 directly in front of the camera I can see it