With all that is out there which IM app have you had the most success with. Looking to get one but looking for a little help here, thanks.

I use IM+. I downloaded the free version and liked it so much I paid for the full version. I like how it seamlessly integrates all of your messaging clients into one. Might as well download the free version and see what you think.

I have Text Plus and never could get it to work. I will try yours!

none exists that has fast multitasking and I always have to leave my current app to reply and I lose whatever I was doing.

I use Meebo
It connects to Yahoo, MS, Gtalk, Aim and maybe more

works very well for me.

I am not worrying about it until the new OS comes out. Without the multitasking, I found using any IM and trying to do anything else downright annoying. I do, however, plan on using Trillian, once the update comes through. I use it on my Blackberry and my PC, and the settings are shared nicely between all devices.

For IM I use IM+ (iPad) and Meebo (iPhone) primarily. IM+ seems to have a better interface on the iPad.

For texting I use TextFree and TextNow for free texting.... iPhone and iPad. I never had success with TextPlus. TextNow allows MMS too which is nice. Between those to and Whistle Phone you can get to my iPad via three different phone numbers lol.