I have a LEE Challenger mounted right beside my RCBS JR3 press on my workbench. I like them both. The LEE Press actually has better leverage for resizing than the RCBS press! Now I'm not recommend you try to swage a bullet on the LEE Press, but I can tell you the force required to resize a brass case is significantly lesser than the RCBS. I'd not think twice about picking up the press and paying LEE for the upgrade parts as well. $45 total investment will get you reloading for just about every standard cartridge (50BMG not being counted as a standard cartridge...)
Bruce