I know the vypyr is a modeling amp. I'm assuming the spider is too? Just based off the names alone I tend to stay away from Line6 stuff. I like Peavey better. I have tried the vypyr out and remember it sounding ok for the price. You have a ton of options for sounds since it is a modeling amp. The thing I remember about the pedals for the vypyr is that there are 2. Sanpera 1 or 2 if I remember right. The second option is the more expensive one ($100 for S1 $200 for S2), but is what you need to fully take advantage of everything you can do with the amp.

I was thinking about buying a vypyr, but after testing and comparing I went with a Valveking 212. Out of your price range though.

1 piece of advice I'd give if you buy from GT though, is to shop online and check out the lowerst price you can get it for. They price match. I was able to save like $200 on my amp because a website had it for a ridiculously low price.