How much money you got bro ?
I am curious as to what is so good about Ableton that you cant achieve similar in Reaper. The midi in Reaper is very fast and intuitive. It may not have all kinds of awesome arpeggiators but you should really be programming your own notes anyway. Its glue function and free item postioning makes layering and merging midi a breeze. The automation features are intuitive ( arming envelope for last tweaked parameter for example ).
Reaper is just the best all around app. Leave the bells and whistles up to you soft synths and the automation.
For midi drums you cant beat
Addictive Drums, holy sheeeitt is it good. The producer presets ( which shape the overall sound ) are phenomenal. You can also use NI Battery which comes included in their Komplete 7 bundle discussed below.
Reaper is the intelligent choice of DAW for both experienced and new users alike.
Also.The following is a list of very HQ and very FREE plugins:
Boot EQMkII - channel strip with tube simulator...this rocks on vocals, especially the "sophisticated" preset ( make sure to roll off your low end EQ or rumble ). Be sure to read the accompanying manual 
Epic Verb.... The best verb I heard ( until i get my NI reverb that is )..great on vox too. For a modern vocal presence sound simply select the default and switch the reverb to ambience and dial in the wet/dry mix. Be sure to read the accompanying manual
Nasty VCS ...effing fantastic channel strip that requires a bit of tweaking ( just like real life ). It has mic preamps, tube simulator, EQ and compression/limiting. Be sure to read the accompanying manual
All of these are available on the download page.
All of these also work flawlessly with Reaper ( which in itself has some very good plugins. Dont be put off by the resource saving, minimalist GUI's )
If you go the Reaper route, then with the money you save you can get one of
the Native Instruments Komplete 7 pack. Either
Komplete 7 ( 80 gigs of samples,synths and effects for $550 ) or
Komplete 7 Elements ( 16 gig of samples,synths and effects for $120 ). Check out the
NI Guitar Rig amp sim ( full version included free in Komplete 7 ). Fantastic.
You may as well download and try
Komplete 7 Players with is totally FREE. The included Kore Player is actually a very handy effects plugin in its own right.
So Yeah. Get
Reaper on a fully functional 30 day trial and Komplete 7 Players to start out.