Hmm! You really have no preference? You like double-action revolvers, striker-fired autos, and 1911-style autos all the same?
The Glock is a great gun. But if you have no real preference for a simple/reliable/ugly gun, you'd probably like something else more. Of course, you said you were looking at a Hi-Point -- and that's the only gun uglier than a Glock.
Hi-Points are good. They're reliable and cheap. But unless you're desperately needing a gun and on the tightest possible budget, you can find something a little more fun.
You said you wanted a larger caliber, but then you also said you were considering a .357. I'm assuming you don't reload, so in that case a .357 is a good idea since 38 special is pretty cheap. You also didn't mention if you have any intention of ever getting a CCW. Assuming you don't reload and you don't want to conceal it, I'd say a used .357 would be an excellent choice, though. You can get something decent like a used Ruger Service Six pretty cheap:
http://www.gunbroker.com/Auction/ViewItem.asp?Item=121296861
Of course I wouldn't get that one because it doesn't have a hammer. Did any of them come like that? Did some moron shave it off? Maybe that's why it's going cheap.
I still can't imagine, though, that you don't have some preference on whether or not you're looking for a 1911-style auto, Glock-style auto, single action revolver, or double action revolver.
You should probably just wander around some gun shows and see if anything really grabs you.