The Asian ETA movements have gotten quite good & very reliable. I have several and overall they have been plenty good.
The Rolex clone movements are getting better and some are quite good, others are not so reliable. Do some reading in the Rolex area of RWI on the specific model watch you are interested in.
Since you are asking about the 3135 movement I have to assume you are interested in a Rolex Sub. I have had a LOT of watches including several Rolex reps over the last 4 yrs. If I was giving advice to myself 4 years ago about which Rolex Sub to start with I would tell myself to just get one with a reliable asian ETA movement and keep reading and doing research on the others. This way you get a watch that, with any luck, will be reliable and if at some point down the road you decide to go with one with a clone movement you will be better prepared to to make that decision.
You can always sell in the m2m here at a small loss