The only thing to watch out for regarding warranties is the fine print. You may need to register the scope via website or mail within a certain timeframe from purchase date or the "lifetime" warranty turns into a 1-year warranty (popular with computer parts vendors!), they may require you to pay shipping one or both ways (which means that "free: replacement scope becomes a $40 replacement scope), and of course the old stall tactic: they may try to hide their contact info as well as possible, and they may or may not employ anyone whose job it is to take your warranty claims. I've dealt with a few lower-tier manufacturers (again, for PC components) who either took an obscene amount of time (over a month) to respond to warranty inquiries, or simply ignored them altogether until I got the BBB to contact them on my behalf.
Nikon, Bushnell and others should also have some decent product in your price range, but in the end it's your call, and I'm not going to tell you you made the wrong choice - most people would rather be snakebitten than run a Tasco, but the thing's been rock-solid for me for going on seven or eight years now, so that's all that matters. I just don't see much benefit in buying a scope for the warranty if the scope isn't very good in the first place - yeah, you get free replacements whenever they break, but in the meantime you're trying to look down a dim, blurry tube that won't hold a zero...
So, warranty is obviously a deciding factor, it just wouldn't be my
first one.
Looking at OpticsPlanet just for a quick idea of what's out there, Leupold has a bunch of VX-I and a few FX/VX-IIs under $300, Nikon has a 2-8x Monarch, Bushnell has the 3-9x 4200 for $299 and a bunch of 3200s for cheaper, etc. If you hunt around I'm sure you can find better prices - OpticsPlanet is usually a bit on the high end in my experience.
ETA: Such as Amazon, which has that 3-9x 4200 for $250 shipped. Bushnell claims a lifetime warranty on materials and workmanship.