Best gas ram technology?

Yes I am messing with you guys but not by much, I purposely go out of my way to buy a spring version of a gun for a couple of reasons one they are usually cheaper two they generally have a few more FPS than their gas equivalent counter parts and lastly I'm set in my ways, you can see in one of my other posts (list your arsenal) that I'm not lying all my many rifles except one are springers and the only reason my latest purchase wasn't is because the hatsan 130s 30. Cal is simply not offered in spring as to your actual question before my ramble you usually get what you pay for and I stress usually because hatsan is currently the exception to that rule If you go to the refurbished section of their website you can get a great rifle for as low as $39 dollars seriously forty bucks and the spring mod 95 is $79 that gun was $300 when it came out and still is in most sites so go check them out and you will see what I mean by the price difference the same rifle in gas is $60 more that's the case with most guns i find in most places the question is are you getting $60 more gun than the spring version? If not is gas really better?
 
I bought the Hatsan air tact .177 my self a few weeks ago and I'm very happy with it, but I'm not sure if I would recommend anything bigger than a .177 or at most a .20 cal in a basic power plant i have their mod 125 in all available calibers .177 .22 .25 and the MOD 130S in .30 cal and a mod 95 in .22 so I have compared both the 125 .22 and the 95 .22 and I unsurprisingly i say go with the biggest available power plant with the bigger calibers it really does make a difference There is 1 air tact .177 available right now in their site go snatch it up.