One thing to consider is how long do you expect it to be supported, buy a onehunglow sourced unit - just try & get parts or support in 2 years time. I have a 15+ year old PACE, and I can still get parts for it, I will probably be able to get them in 10 years time, it was quite expensive when I got it, divide by more than 15 years, you get the real cost, and even today, it is still a very good piece of equipment. So basically it's down to your budget, how long you expect it's service life to be, and will it be of use to you in a "few" years time.