I'll qualify this by saying I haven't owned an iPad since the 2nd gen, but how are the 3d party keyboards on iOS? Do they limit them like they do with non-Safari browsers?

I remember one of the main reasons I "jailbroke" my iPad was so I could install an improved/alternate software keyboard, but I remember reading they added the option officially a while back.

I'm curious: are they artificially limited or do they all just suck?