I own a Dreamline Lite .25, and really enjoy it. It is a very accurate rifle. I have not had any issues with barrel droop as described above, but I have not been able to shoot further than 30 yards or so. It definitely is demonstrating the accuracy to go well beyond 30 yards. I also have a power plenum waiting to be attached to the rifle, but I wanted to play around with it and understand it's abilities in the stock configuration first.
You didn't mention what you want to do with the rifle, or if you are under any FT/LB restrictions like the U.K., or if you have a budget restriction. My rifle is the US full power version, with the aluminum air cylinder, and seems to get almost 30-40 shots on a regulator setting of 145-150 BAR as it came to me from Utah Airguns. I pumped it full the first time using my high pressure hand pump. Last time for that... I was sore for a couple of days. ?
If you are set on the Dreamline, I think you will be pleased, but definitely try to shoot one before you buy. If you only want a pest or small game hunter out to 50 yards max, you might want to consider an Seneca Aspen (also available as the Nova Freedom). It's a multi-pump PCP, that has gotten very good reviews, and a thorough write up by B.B. Pelletier on the Pyramid Air forums. If I was just getting into PCP rifles again, I think I would drop the cash on that, since all you need would be a scope, rings, and pellets to start (and keep) shooting.
After my hand pump experience with a 250BAR rifle, I ended up buying an Altaros high pressure booster pump to fill the rifle directly. I already owned a shop compressor, and decided that high pressure booster was a more reliable option than the portable compressors based on a lot of reading and research. There is an excellent write up on the Altaros on Airgun Nation.
Good luck!