I have access to both.
Wife has an 07 Tunuo I have an 05 Tuoldo.
They are very different to ride.
The Tunuo 07 - 09 model is smaller and you sit IN it to ride. The fairing actually works better than the old one, and the power is more linear. If you are used to Japenese bikes this is the one to go for. Brakes have more initial bite, but ultimateley no more powerful. Build quality on panel fit etc is better, tuning parts from 06 on RSVR's are compatible.
The Tuoldo 02-05 is based on the 01-03 mille and is taller and slightly larger, you sit ON it to ride. Out of the crate it has a flat spot in the power delivery from 5-6k which will loft the front wheel if you are hard on the gas in 1st, 2nd & sometimes 3rd when the power comes in properly at 6k.
Whichever you decide, get a factory model. The bike carries about £4k worth of Ohlins, Oz wheels & carbon, for a grand or so price difference.
If you go for an R model.
The Tuoldo really benefits from an airbox; Evo or Renegade, and a 2+2 exhaust, Akra, Leo Vince or Arrows etc. You will need a PCIII to remap the fuel injection etc. Suspension, a rear Ohlins is a good investment, front fork revalve helps and so do lighter wheels; Oz, BST or Marchenisi. Bodywork wise a replacement fairing is a must, the stock one doesn't do anything; MRA, Powerbronze etc. Seat pods are rare and expensive - a standard one sells for about £100 on Ebay.
The Tunuo needs less work IMHO. Rear Sachs is a shocker in both senses of the word. Get an Ohlins for it. Forks & wheels as with the Tuoldo will improve it a bit. Engine wise, a set of cans rather than a full 2+2 and reset the engine map. You can fit an airbox, but it's not so important. Front fairing - Puig or Ermax are both popular.
If I was to recommend - I would suggest an early Tunuo factory if you can stretch to one, it will save you plenty in the long run.
