Hadn't been doing this long and started with a Lee Anniversary kit. Have bought several things since and it's done great from 357 to 7 mm mag and everything in between. Arm feels like it has some slack in it and everything is torqued up good. Have been looking at a RCBS Rockchucker. Midway has them on sale now for $139.00. Was wondering if all my Lee and Hornady dies and she'll holders are compatible. Any pros and cons I need to know. I'd like to have the Foster but too rich for my blood. Also will I have to buy RCBS lock rings for all my dies or will Lee lock rings be ok. Thanks in advance for any info. Single stage loading only.