Hello one1speed! Exciting times now for the lever lover, so many great options out there. CT1, L1, Strega, Cremina. I am sure you will get lots of good advice here, and here is my 2 cents on it.
I have the Strietman ES1, Strega, Cremina, and Caravel. They all have such different styles and I like each for different reasons. They are each great for particular situations and even for different use and space reasons. The ES1 is great as it is so small, and if you will never need steam and do not drink milk, and have a need for a small footprint on the counter the CT1 ticks a lot of the boxes. They are also a work of art, always a conversation starter.
I know you did not mention the Cremina, but I feel I have to throw it out there because they are such great little machines. The heat up fast, pull amazing soft manual lever shots, and shutdown and clean up fast. I also love its small space requirement on the counter top. Good steaming too from such a small machine.
Never used the L1, but I have used the Strega for several years and it is excellent as you can flip it on and leave it on all day, pulling shot after shot after shot and steaming milk. I think the L1 has all those same advantages going for it too. It does need more space than the others, so measure your coffee bar and check how it will all fit once you get it, allow space for the grinder, knock box, a place to weigh beans, and tamp.
Good luck in your decision, and don't stress the choice too much, if you are like me you may end up owning all of them in the long run anyway!