any of you shave using a few different razors within the same shaving session?

It seems to me, you should find yourself an agreeable adjustable? Dial it to your heart's content. There are some very good vintage adjustables and some even better modern adjustables.

I also have many 3 piece DE razors capable of removing 10-15 days growth in a single pass and still be completely smooth and comfortable on passes 2, 3, and 4. Never being anything remotely close to harsh. Harsh gets put on BST pretty fast. What kind of razors do you use that are acceptable in the first pass but get harsh after?

The only time I use 2 razors is to compare them side-by-side. I don't head shave and I am not a daily shaver. Just whenever the mood strikes or the occasion requires it.

Don’t use used razor gear. OCD reasons. Don’t ask. Just don’t.

I sold all my DE razors in 2016/2017, went back to a mix of Fusion 5 & Mach 3 and had excellent shaves. Got bored.
Bought 3 new DE razors two weeks ago.

The efficient razors I didn’t enjoy so much for the final pass were: ATT widest blade gap plate, ikon widest blade gap, R41, Merkur Slant, Fatip etc.

The too mild razors I didn’t enjoy for the first pass on 3-4 days stubble were: Feather Stainless, R89/DE89, Pils Stainless steel, Ikon mild, ATT mildest and I forgot.

Claus, order yourself a Wolfman DC with different blade gaps on each side. Then you can get by with one razor per shave! I have a WR2 1.25 SB / 1.05 OC and it works like a charm. First two passes are the 1.25 SB and XTG is 1.05 OC. Wolfman are smooth like butter like a criminal undercover.

I use multiple razors when comparing. The other day I used a bullet-tip Gem-style razor to compare it to my Parker injector. Which led me to conclude that I don't enjoy the Gem-style blades enough to warrant more frequent use. 

But the real point is enjoying your shaves, which is something most people don't do. As a kid I remember hearing men lament that they hated to shave. I couldn't wait to shave! And I've loved it ever since. By making a daily chore a source of fun and pleasure you're enhancing your life. So if you enjoy using several razors for a shave, go ahead! 

I use two razors for one shave.

Efficient one for first & second pass

Mild one for last pass.

I really like the OneBlade for touchups, but find it pretty useless for anything else. So I sometimes do 2 passes with the Henson & a 3rd with the OneBlade.

I adjust my adjustable (old fatboy I got as a gift) to a lower setting on second or third pass.
Sometimes if I have irritated spots like the neck I'd also lower it a notch there.

Claus, order yourself a Wolfman DC with different blade gaps on each side. Then you can get by with one razor per shave! I have a WR2 1.25 SB / 1.05 OC and it works like a charm. First two passes are the 1.25 SB and XTG is 1.05 OC. Wolfman are smooth like butter like a criminal undercover.

Thanks for your advice, but back in 2016 Wolfman was one of the reasons I sold my entire DE razor collection and went back to my trusty Fusion 5 & Mach 3 carts.
I got sick of the hype trains.

Now I’m bored, getting great shaves with my Fusion 5, but it’s boring. So I jumped back on the DE razor wagon, just to try out new razors and blades.

But I really truly hate waiting lists - so unless James will get help to make some more razors, I’ll never own a Wolfman razor.

Cheers, Claus

I have a Wolfman. Got it years ago. Before the lines wrapped around the block, before the prices increased. It's a great razor. Everything about it is superb. But it's not better than my Timeless SS or my Blackbird. 

People learning to shave with straight razors (or shavettes) often go through a long period in which the shave begins with the straight or shavette and is finished with a safety razor.  This allows open blade skills to be refined - which can be a long process -  while  still getting close shaves and avoiding or minimizing blood loss.  (I'm riding that trail myself, which is why I mention it.)

The first time I shaved with a straight, I was terrified. Excited but terrified. And, like you, I took it slow. I'd do one side of my face, then the other, and leave it at that, finishing my chin and upper lip and neck with a DE. After about a month of using the straight every day, I was comfortable enough to shave my whole face and neck. After two months I was comfortable and having fun. I know it goes without saying but just in case, I'll say it: the cardinal rule of shaving with a straight, whether an actual straight or a shavette, is this: move the blade up or move the blade down BUT NEVER HORIZONTALLY.