[MIT-Scheme-users] Scheme for Mac OS Lion

[Sojourner]

Wanting to go through MIT's SICP course and looking for a decent Scheme app for 
the Mac. Racket seems to be the most-oft recommended and it really sucks. 
MIT-Scheme seems to the be the next most-oft recommended and it's really 
non-intuitive.

Googling extensively has turned up lots of leads to apps and command-line 
things with substandard instructions and explanations. I'm no beginner to 
Terminal or the command-line, but the instructions I've seen assume advanced 
knowledge. (Oh yeah, and while I'm willing to compile via Terminal, I've had 
nightmares trying to work with MacPorts in the past, so please forego 
recommending apps which require installing either MacPorts or Homebrew.)

With as many Mac users who've done SICP, I know there must be some Scheme app 
out there that "just works", but where on earth is it? And, at this point, I'm 
willing to pay, so recommendations for paid apps are fine.