What to use on the road?

Not sure where this post should go.
I have Sonar X3c Studio in my home studio.  It runs on a fairly powerful desktop, and everything works great!
For the first time I am asked to record on the road.  I wonder what hardware do Sonar users use on the road?

Help most appreciated.

For live recording in clubs, I used several times two Edirol UA-101 USB interfaces together, for 16 simultaneous ins.
I began with an old (2008) Asus laptop (Intel dualcore P8600 2,4 GHz, 4 Go Ram, Vista 32, DD 5400 rpm), without any problems.
Now i use a HP DV7 (i7 720 QM, 4 Go ram, Win 7/64, DD 7200 rpm).
As Sidroe said, if you don't have a lot of plugs on the tracks (which is the case for live recording, i guess), the recording task doesn't need a very powerful PC, and you can handle 16 or 24 tracks easily with an ordinary laptop.
 
@Sidroe : I am looking for a new interface (to make my set up lighter, and perhaps better - ?), and i thought about the Studio Capture.
Are you satisfied with the latency you get (not for live recording, but for my own work) ?

If all you are doing is recording audio, then almost any stable laptop will work. Audio streaming does not require much in the way of CPU or memory, but it does require a low DPCLAT reading. 
From now on I want to test any Laptop before I buy it. 
The most important component ( IMHO) is a fast, clean hard drive. 
My equipment would make most here laugh, but I have never had a dropout or a crash and have recorded ?? 500?? + hours of live band and shows. 
My interface is a Tascam us1642. Capable of 16 tracks ( 15/16 are SPDIF via my 01V)
Note: There is now the us1800 that replaced it and sell for $300. For the money this is one of the best deals on the market for channel count. It's solid built, rack mounted and road worthy. 
My laptops are 2004 Acer Aspire and a Toshiba Satellite 1.4Gz 1.5 Gig Ram XP 32bit. 7200 RPM Hard drives. 
 Both  optimized for DAW. DPCLAT around 50ms steady. 
recording @ 48hz. 12 to 16 tracks plus MID from a Keyboard. so 18 tracks. Only noticeable issue was very slow screen re-draws after you hit stop. 
I also used my wifes Lenovo Thinkpad i5 T420 a few times and was NOT allowed to optimize it. DPCLAT was around 50ms even with AV and who knows what going on in there. Amazing I thought. It was more than capable of the task and now the screen re-draws were not an issue.  I installed Sonar 8.5P 64 Bit. The Tascam Drivers work better under this environment. But there's no difference with Audio recording one way or the other.
It will depend on how critical what your recording is. I would not recomend a barebones system like this if your hoping to sell the product and make a living. Then you would want redundancy systems.. at least 3. And I think I would be using Logic anyways in that case. ( oh oh, shouldn't have said that)  

Hi, TS! Sorry I was offline for a while. I am very happy with the Studio Captures so far. While running them on X2a it was kind of iffy. But since upgrading to X3c things have been markedly better. I have some other threads in the forums here about my experiences when I first bought and installed both the interfaces. There are some tricky spots about the installation you have to watch out for. And there is the auto-shutdown issue. For more details search the forum for my Studio-Capture experiences. I must say I am happier now with my gear than I have been in a long time. I also have a little Focusrite Saffire 6 USB interface that I take along for just quick remote recordings or composing in the hotel room. It's old but does the job very nicely.

BTW, I have a friend that uses the Alesis HD24 with the bay and he seems very happy. And yes, the HD is IDE only. In the next few years that could be a deal breaker. Yes, you will still need some sort of hardware mixer. As I stated before, I wouldn't be concerned about hauling a lot of FX around. When most people perform live they usually already have their sound set. You may have to tweak each persons rig a little to get a more recordable sound happening. For the most part, just concentrate on trying to get good clean recordings on each track without intruding on the player's territory too much. Mixdown is when you want to start bringing in any kind of effect or editing.
 

I used 3 ADATs in a rack with Sonar 8.5 for quite a few years...I'm not currently doing any remote work. 
 
As stated, continuous tracking is about the easiest thing to manage, but getting all the levels right is important. 8.5 didn't easily allow a view of all the levels in one view, so I set them up in 6 groups of 8.