Walmart carries all sorts of stuff on their website that they wouldn't in stores...
You really can't go wrong with a Marauder (assuming, the link didn't work quite right...), I've had one for 10 years... hand pumping is doable, that's all I've had the whole time I've had it, for pesting it's fine but would get really old target shooting or plinking... years ago I got a chronograph and verified my .22 marauder at the settings it's at is getting 850fps at first at least and POI seems fairly consistent to about 1500psi which is about 50 shots... if yo do get one look up taking out the "lawyer spring" if memory serves, I got a refurb and it was already gone... and the Bstaley mod which is just some O rings in front of the hammer...
The marauder is probably quieter and has a longer track record and a choked barrel and all but I would take a look at
THIS GUY, I have it in .177 and it's neat, taken out several pest birds around the house... I was shooting black walnuts out of the tree a few months ago... for a first go at a PCP either would be good, just because it's capable of being filled to almost 4500psi it doesn't have to be...
For a hand pump, the cheapie's (at least some of them) are fine apparently, I started with a Benjamin pump but it gave out due to corrosion on the chrome in an important place that was tearing O rings...
By held different, look up "artillery hold" and I bet you don't find anyone talking about anything but spring piston pellet guns... with the dual direction recoil it's apparently best to let them float in front instead of being held firm like you would anything else... then you get to guns like the R9 and apparently they shoot better than the $100 specials...
The lookalike guns aren't for serious work, they're pretty much all just for plinking, sure they'll work for some things but not in the same league...