should I buy m-audio 2x2 or cakewalk um-3g?

I am just starting to dive into the midi world. I need to buy something to use with Sonar X1 Producer. midi gear: Roland FP 8 and a Pintech E-kit(I think it the Road Pro Series, it has EZv2 brain). I'm just looking to use these 2 devises as midi controllers don't need the sounds built in to them. Sooooo...should I buy m-audio midisport 2x2 or cakewalk um-3g? obviously the um-3g gives me room to grow with 3 instead of 2 but which performs better? Even though this is a cakewalk forum please be unbiased. extra info: I'm mostly interested in using the roland for SI piano, SI strings, z3ta, and pintech kit with superior drummer 2. also I have a really bad latency problem with my Alesis multimix 8 usb so latency is a major concern.

Yeah.... the audio interface is where the latency is coming from.  

as far as midi..... I use an interface for audio (Focusrite Saffire) that has the midi integrated into it.  One in and one out for midi. 

I am a recent convert to midi, in a relative manner, since I started working with it a lot in the past 4 years or so and it's been around much longer than that. 

From what I think I know..... midi is serial in nature. I believe you can daisy chain up to 16 midi devices like keyboards and as long as they are all on different channels transmitting.....and you have the software synths in the DAW set up to receive on the proper midi channels ...you should have them all working with the proper synths.  That's why they have midi IN/OUT/THRU on them. 

As a small one man project studio, I have never had the need to play 2 midi keyboards at the same time, so it has never presented as a problem to have need for more then one midi input. 

I might be wrong, but unless you have several keyboards that are all being played live (as in a band) then daisy chaining them should be OK and use one midi input on the interface.