First of all - long home press = inbuilt task switcher. It's probably obvious but it took me a week and the manual to find that out, so chances are some people still don't know it.
For my own purposes I use Wave Launcher with recents on - this way I always have the access to all my most important apps + drawer + few last ones and this is spot on for me and works ALWAYS - no matter what app is in the foreground I naver had a problem of not being able to access Wave Launcher. I have been using PowerStrip for a long time for the same purposes but Wave is more natural.
The big advantage is the ability to access widgets this way - great if you need to for example change the screen brightness with SwitchPro while playing a full screen 3D game that hides the taskbar (so you can't use taskbar power controls). It works fine, apps don't crash.
I don't remember coming across any app similar to Multiflow but I must admit I was never looking for one because for me it beats the purpose - multitasking is all about efficiency, I need one gesture to access what I want. Double home + swipe + tap is too much work
Give it some time, it takes a while to find a perfect combination of apps to get that smooth user experience. I bet it took you a bit with iOS too.