Well, I have found, as many others have, that the RCBS 150gr or the Lyman 358477 is one of the very best options out there for the 38/357s. Other designs are obviously good. And I'll second the 358156, and the 358429. Though, I find the 429 a little heavy for what I do...which is mostly target work.
I personally bought this one a while back for .38spl loads, as I too got tired of casting on a 2-Cav 358477. With 5.0gr of Unique it consistently does 875-900fps. I have been VERY happy with it as far as a target load goes. And it can be had in a 8-Cavity Aluminum mold, making it easy to cast a mountain of bullets in very little time.
https://www.mp-molds.com/product/359...aluminum-mold/
The other option I would suggest, is to go over to NOE Bullet Molds, and pick you up one of these. They can be had in 5-cavity with or without gaschecks. This is a clone of the 358477, and from what I understand it shoots really nice. I'd probably go for the version with Gaschecks, as you mentioned you're using these specifically in a 357.
https://noebulletmolds.com/site/prod...60-152-swc-v5/
Lots of other molds out there will do you fine. Believe it or not, one of the best shooting bullets I've used is the Lee Tumble Lube 358-158-SWC. You can get a 6-Cav from Lee (through Titan Reloading) for probably $50ish. The target below is an example group I use for that bullet in my gun, and does have a flyer. But not bad for 25yrds with non-adjustable iron sights...
