HTC Droid Eris :: What I Can Do About Making Phone Lag Less

Okay my best friend and myself always have to have the latest phone.

So we both got Moto droids on it's first launch but the Camera sucked horirbly... as well as the keyboard was iffy and it was too heavy

2 weeks later we got Eris...but noticed a big difference in the eris and the droid. While the dorid, in my opinion, is big and ugly and too rectangular...it's faster vs a nice looking lighter eris but i understand the processor and fragmentation of the OS and all that Jazz

So then he told me about the Pre plus and we tried it and I love the concept of the OS however I want to come back to the eris because A)lack of apps, B)Call Quality sucks on the Pre plus 3)I love Android and all it's features

Yet when i came back to the eris it's still slow even after i did some update to it(idk what the update was for as it's still on 1.5). So are there any suggestions as to what I can do about making my phone lag less(5 seconds to open an app or load messages or emails is ridiculous) and the battery is horrible but i hear I have to "train" it. I don't understand why I would have to train something to not die but idk.

Any help would be greatly appreciated and please keep the bs & rude comments to yourselves

Sorry for any typos(TYPING SUPER FAST AND I DONT FEEL LIKE SPELL CHECKING) LOLZ.