Good Ada development tools on Sparc?

[cis.ohio-state.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!paladin.amer]

Since I have been unable to locate a FAQ, I'd be grateful for any advice
or pointers to information about good SPARC-based Ada development tools. 
(So far, I only know about the Rational Environment.) 


Some points to consider (you don't have to know about them all):

- Compiler/interpreter/linker: 
	Support for short edit/compile/test-cycles? 
	Incremental linker? 
	Editor integration?
	Performance analysis? 
- Debugger: 
	Source/assembly level? 
	Graphical, screen-based or simple TTY interface?
- GUI-tools: 
	Code library? 
	Interactive GUI-designer? 
	Application framework? 
- Interfaces: Other languages, etc?
- Vendor: Name, phone, fax? Approximate cost?


I'm also interested in cheaper "low-end" environments, in case you have any 
first-hand experience. 


Thanks!

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