JRSunt is on the money!
I also have been riding a 4rt for 8 years. In fact, I am still riding my original 05 4rt which I bought from new! It's as standard, bar a few cosmetic changes and slightly different gearing. You don't need to do anything to them but ride them!
They may be expensive but my mont doesn't owe me a penny. Iv had nothing wrong with it, I'm out most weekends on it and I can still win the odd trial on it!
If Montesa - Honda think that all they needed was to make a few changes to them, then that's good enough for me!
I personaly think the new cheaper option will be a big hit especially with clubman riders such as myself.
Watch this space !