Looking for a new guitar amp?

I have a very small 10w amp that came with my guitar (Ibanez starter kit lol). The guitar is actually really nice but i desperately need a new amp. My birthday is coming up and I was thinking of getting a Line 6 Spider IV 75w amp. Ive played on one before and loved all the features. Is this a good amp to get? Also, I understand that this is a digital modeling amp, and not a tube amp. If you have and suggestions for tube amps that are as good or better than the Line 6, please tell me. I would prefer to stay under $400 price-wise. Thanks!